38904393 has 8 divisors (see below), whose sum is σ = 56588256. Its totient is φ = 23578400.

The previous prime is 38904337. The next prime is 38904407. The reversal of 38904393 is 39340983.

38904393 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38904393 - 2⁸ = 38904137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38904323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589428 + ... + 589493.

It is an arithmetic number, because the mean of its divisors is an integer number (7073532).

Almost surely, 2^38904393 is an apocalyptic number.

38904393 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

38904393 is a deficient number, since it is larger than the sum of its proper divisors (17683863).

38904393 is a wasteful number, since it uses less digits than its factorization.

38904393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178935.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 38904393 is about 6237.3386151467. The cubic root of 38904393 is about 338.8438034002.

The spelling of 38904393 in words is "thirty-eight million, nine hundred four thousand, three hundred ninety-three".