39918699 has 18 divisors (see below), whose sum is σ = 58806020. Its totient is φ = 26093808.

The previous prime is 39918689. The next prime is 39918757. The reversal of 39918699 is 99681993.

It is not a de Polignac number, because 39918699 - 2⁸ = 39918443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39918629) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24492 + ... + 26070.

Almost surely, 2^39918699 is an apocalyptic number.

39918699 is a deficient number, since it is larger than the sum of its proper divisors (18887321).

39918699 is a wasteful number, since it uses less digits than its factorization.

39918699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1635 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 39918699 is about 6318.1246426452. The cubic root of 39918699 is about 341.7633275853.

The spelling of 39918699 in words is "thirty-nine million, nine hundred eighteen thousand, six hundred ninety-nine".