9439904 has 12 divisors (see below), whose sum is σ = 18584874. Its totient is φ = 4719936.

The previous prime is 9439901. The next prime is 9439931. The reversal of 9439904 is 4099349.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 559504 = 2980^2 + 748^2 .

It is a super-2 number, since 2×9439904² = 178223575058432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9439901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 147467 + ... + 147530.

Almost surely, 2^9439904 is an apocalyptic number.

It is an amenable number.

9439904 is a deficient number, since it is larger than the sum of its proper divisors (9144970).

9439904 is a wasteful number, since it uses less digits than its factorization.

9439904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295007 (or 294999 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 9439904 is about 3072.4426764384. The cubic root of 9439904 is about 211.3436446278.

The spelling of 9439904 in words is "nine million, four hundred thirty-nine thousand, nine hundred four".