1399104 has 84 divisors (see below), whose sum is σ = 4596384. Its totient is φ = 398592.

The previous prime is 1399063. The next prime is 1399109. The reversal of 1399104 is 4019931.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3859 + ... + 4205.

2^1399104 is an apocalyptic number.

1399104 is a gapful number since it is divisible by the number (14) 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 1399104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298192).

1399104 is an abundant number, since it is smaller than the sum of its proper divisors (3197280).

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

1399104 is a wasteful number, since it uses less digits than its factorization.

1399104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1399104 is about 1182.8372669138. The cubic root of 1399104 is about 111.8450237510.

The spelling of 1399104 in words is "one million, three hundred ninety-nine thousand, one hundred four".