39870957 has 12 divisors (see below), whose sum is σ = 61840896. Its totient is φ = 22783320.

The previous prime is 39870917. The next prime is 39870979. The reversal of 39870957 is 75907893.

It is not a de Polignac number, because 39870957 - 2¹⁰ = 39869933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39870917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135469 + ... + 135762.

It is an arithmetic number, because the mean of its divisors is an integer number (5153408).

Almost surely, 2^39870957 is an apocalyptic number.

It is an amenable number.

39870957 is a deficient number, since it is larger than the sum of its proper divisors (21969939).

39870957 is a wasteful number, since it uses less digits than its factorization.

39870957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271248 (or 271241 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 39870957 is about 6314.3453342370. The cubic root of 39870957 is about 341.6270257665.

The spelling of 39870957 in words is "thirty-nine million, eight hundred seventy thousand, nine hundred fifty-seven".