9390040 has 32 divisors (see below), whose sum is σ = 23049360. Its totient is φ = 3414400.

The previous prime is 9390037. The next prime is 9390041. The reversal of 9390040 is 400939.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9389987 and 9390014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9390041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10231 + ... + 11110.

Almost surely, 2^9390040 is an apocalyptic number.

It is an amenable number.

9390040 is an abundant number, since it is smaller than the sum of its proper divisors (13659320).

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

9390040 is a wasteful number, since it uses less digits than its factorization.

9390040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21363 (or 21359 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 9390040 is about 3064.3172159553. The cubic root of 9390040 is about 210.9708636573.

Adding to 9390040 its reverse (400939), we get a palindrome (9790979).

The spelling of 9390040 in words is "nine million, three hundred ninety thousand, forty".