16399692 has 24 divisors (see below), whose sum is σ = 42518000. Its totient is φ = 5466528.

The previous prime is 16399681. The next prime is 16399729. The reversal of 16399692 is 29699361.

It is a happy number.

16399692 is a `hidden beast` number, since 1 + 639 + 9 + 6 + 9 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75817 + ... + 76032.

Almost surely, 2^16399692 is an apocalyptic number.

16399692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16399692 is an abundant number, since it is smaller than the sum of its proper divisors (26118308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16399692 is a wasteful number, since it uses less digits than its factorization.

16399692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151862 (or 151854 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 16399692 is about 4049.6533184953. The cubic root of 16399692 is about 254.0652280449.

The spelling of 16399692 in words is "sixteen million, three hundred ninety-nine thousand, six hundred ninety-two".