16399694 has 8 divisors (see below), whose sum is σ = 24633840. Its totient is φ = 8188416.

The previous prime is 16399681. The next prime is 16399729. The reversal of 16399694 is 49699361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3794 + ... + 6869.

It is an arithmetic number, because the mean of its divisors is an integer number (3079230).

Almost surely, 2^16399694 is an apocalyptic number.

16399694 is a deficient number, since it is larger than the sum of its proper divisors (8234146).

16399694 is a wasteful number, since it uses less digits than its factorization.

16399694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11434.

The product of its digits is 314928, while the sum is 47.

The square root of 16399694 is about 4049.6535654300. The cubic root of 16399694 is about 254.0652383730.

The spelling of 16399694 in words is "sixteen million, three hundred ninety-nine thousand, six hundred ninety-four".