39958057 has 4 divisors (see below), whose sum is σ = 40072900. Its totient is φ = 39843216.

The previous prime is 39958049. The next prime is 39958069. The reversal of 39958057 is 75085993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75085993 = 139 ⋅540187.

It can be written as a sum of positive squares in 2 ways, for example, as 17147881 + 22810176 = 4141^2 + 4776^2 .

It is a cyclic number.

It is not a de Polignac number, because 39958057 - 2³ = 39958049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39957998 and 39958016.

It is not an unprimeable number, because it can be changed into a prime (39958657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56898 + ... + 57595.

It is an arithmetic number, because the mean of its divisors is an integer number (10018225).

Almost surely, 2^39958057 is an apocalyptic number.

It is an amenable number.

39958057 is a deficient number, since it is larger than the sum of its proper divisors (114843).

39958057 is a wasteful number, since it uses less digits than its factorization.

39958057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114842.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 39958057 is about 6321.2385653446. The cubic root of 39958057 is about 341.8756116617.

The spelling of 39958057 in words is "thirty-nine million, nine hundred fifty-eight thousand, fifty-seven".