39917995 has 16 divisors (see below), whose sum is σ = 53831232. Its totient is φ = 28195200.

The previous prime is 39917981. The next prime is 39918059. The reversal of 39917995 is 59971993.

It is not a de Polignac number, because 39917995 - 2⁵ = 39917963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11856 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (3364452).

Almost surely, 2^39917995 is an apocalyptic number.

39917995 is a deficient number, since it is larger than the sum of its proper divisors (13913237).

39917995 is a wasteful number, since it uses less digits than its factorization.

39917995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26742.

The product of its digits is 688905, while the sum is 52.

The square root of 39917995 is about 6318.0689296651. The cubic root of 39917995 is about 341.7613184784.

The spelling of 39917995 in words is "thirty-nine million, nine hundred seventeen thousand, nine hundred ninety-five".