399675982 has 8 divisors (see below), whose sum is σ = 631067400. Its totient is φ = 189320184.

The previous prime is 399675979. The next prime is 399676009. The reversal of 399675982 is 289576993.

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, 5258857 + ... + 5258932.

It is an arithmetic number, because the mean of its divisors is an integer number (78883425).

Almost surely, 2^399675982 is an apocalyptic number.

399675982 is a deficient number, since it is larger than the sum of its proper divisors (231391418).

399675982 is a wasteful number, since it uses less digits than its factorization.

399675982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517810.

The product of its digits is 7348320, while the sum is 58.

The square root of 399675982 is about 19991.8979089030. The cubic root of 399675982 is about 736.6072972317.

The spelling of 399675982 in words is "three hundred ninety-nine million, six hundred seventy-five thousand, nine hundred eighty-two".