16407994 has 8 divisors (see below), whose sum is σ = 24630048. Its totient is φ = 8197980.

The previous prime is 16407973. The next prime is 16408027. The reversal of 16407994 is 49970461.

It is a happy number.

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

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, 2209 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (3078756).

Almost surely, 2^16407994 is an apocalyptic number.

16407994 is a deficient number, since it is larger than the sum of its proper divisors (8222054).

16407994 is a wasteful number, since it uses less digits than its factorization.

16407994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16407994 is about 4050.6782148179. The cubic root of 16407994 is about 254.1080925431.

The spelling of 16407994 in words is "sixteen million, four hundred seven thousand, nine hundred ninety-four".