3999990974 has 8 divisors (see below), whose sum is σ = 6857127408. Its totient is φ = 1714281840.

The previous prime is 3999990949. The next prime is 3999990989. The reversal of 3999990974 is 4790999993.

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, 142856807 + ... + 142856834.

It is an arithmetic number, because the mean of its divisors is an integer number (857140926).

Almost surely, 2^3999990974 is an apocalyptic number.

3999990974 is a deficient number, since it is larger than the sum of its proper divisors (2857136434).

3999990974 is a wasteful number, since it uses less digits than its factorization.

3999990974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285713650.

The product of its (nonzero) digits is 44641044, while the sum is 68.

The square root of 3999990974 is about 63245.4818465319. The cubic root of 3999990974 is about 1587.3998579771.

The spelling of 3999990974 in words is "three billion, nine hundred ninety-nine million, nine hundred ninety thousand, nine hundred seventy-four".