399976712 has 32 divisors (see below), whose sum is σ = 770489280. Its totient is φ = 194550720.

The previous prime is 399976691. The next prime is 399976723. The reversal of 399976712 is 217679993.

It is a happy number.

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, 88262 + ... + 92682.

It is an arithmetic number, because the mean of its divisors is an integer number (24077790).

Almost surely, 2^399976712 is an apocalyptic number.

It is an amenable number.

399976712 is a deficient number, since it is larger than the sum of its proper divisors (370512568).

399976712 is a wasteful number, since it uses less digits than its factorization.

399976712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733 (or 4729 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 53.

The square root of 399976712 is about 19999.4177915258. The cubic root of 399976712 is about 736.7920004963.

The spelling of 399976712 in words is "three hundred ninety-nine million, nine hundred seventy-six thousand, seven hundred twelve".