16039899 has 6 divisors (see below), whose sum is σ = 23168756. Its totient is φ = 10693260.

The previous prime is 16039879. The next prime is 16039909. The reversal of 16039899 is 99893061.

It is not a de Polignac number, because 16039899 - 2¹⁶ = 15974363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16039879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 891097 + ... + 891114.

Almost surely, 2^16039899 is an apocalyptic number.

16039899 is a deficient number, since it is larger than the sum of its proper divisors (7128857).

16039899 is a wasteful number, since it uses less digits than its factorization.

16039899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782217 (or 1782214 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 16039899 is about 4004.9842696320. The cubic root of 16039899 is about 252.1934927382.

The spelling of 16039899 in words is "sixteen million, thirty-nine thousand, eight hundred ninety-nine".