39404157 has 32 divisors (see below), whose sum is σ = 61057920. Its totient is φ = 22394880.

The previous prime is 39404089. The next prime is 39404171. The reversal of 39404157 is 75140493.

39404157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39404157 - 2⁸ = 39403901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39404177) 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 31 ways as a sum of consecutive naturals, for example, 29733 + ... + 31029.

It is an arithmetic number, because the mean of its divisors is an integer number (1908060).

Almost surely, 2^39404157 is an apocalyptic number.

It is an amenable number.

39404157 is a deficient number, since it is larger than the sum of its proper divisors (21653763).

39404157 is a wasteful number, since it uses less digits than its factorization.

39404157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 39404157 is about 6277.2730544401. The cubic root of 39404157 is about 340.2885583758.

The spelling of 39404157 in words is "thirty-nine million, four hundred four thousand, one hundred fifty-seven".