1939392 has 168 divisors, whose sum is σ = 7026656. Its totient is φ = 497664.

The previous prime is 1939381. The next prime is 1939397. The reversal of 1939392 is 2939391.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×1939392² = 7522482659328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52398 + ... + 52434.

2^1939392 is an apocalyptic number.

1939392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3513328).

1939392 is an abundant number, since it is smaller than the sum of its proper divisors (5087264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1939392 is a wasteful number, since it uses less digits than its factorization.

1939392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 62 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 1939392 is about 1392.6205513348. The cubic root of 1939392 is about 124.7063399839.

Subtracting 1939392 from its reverse (2939391), we obtain a palindrome (999999).

The spelling of 1939392 in words is "one million, nine hundred thirty-nine thousand, three hundred ninety-two".