399663223982 has 16 divisors (see below), whose sum is σ = 663755478912. Its totient is φ = 178953681720.

The previous prime is 399663223963. The next prime is 399663224029. The reversal of 399663223982 is 289322366993.

It is a congruent 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, 135569498 + ... + 135572445.

It is an arithmetic number, because the mean of its divisors is an integer number (41484717432).

Almost surely, 2^399663223982 is an apocalyptic number.

399663223982 is a deficient number, since it is larger than the sum of its proper divisors (264092254930).

399663223982 is a wasteful number, since it uses less digits than its factorization.

399663223982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271142023.

The product of its digits is 45349632, while the sum is 62.

The spelling of 399663223982 in words is "three hundred ninety-nine billion, six hundred sixty-three million, two hundred twenty-three thousand, nine hundred eighty-two".