38932857 has 6 divisors (see below), whose sum is σ = 56236362. Its totient is φ = 25955232.

The previous prime is 38932849. The next prime is 38932889. The reversal of 38932857 is 75823983.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 2499561 = 6036^2 + 1581^2 .

It is not a de Polignac number, because 38932857 - 2³ = 38932849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38912857) 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 5 ways as a sum of consecutive naturals, for example, 2162928 + ... + 2162945.

It is an arithmetic number, because the mean of its divisors is an integer number (9372727).

Almost surely, 2^38932857 is an apocalyptic number.

It is an amenable number.

38932857 is a deficient number, since it is larger than the sum of its proper divisors (17303505).

38932857 is a wasteful number, since it uses less digits than its factorization.

38932857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325879 (or 4325876 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 38932857 is about 6239.6199403489. The cubic root of 38932857 is about 338.9264204523.

The spelling of 38932857 in words is "thirty-eight million, nine hundred thirty-two thousand, eight hundred fifty-seven".