399487082 has 8 divisors (see below), whose sum is σ = 601618752. Its totient is φ = 198947500.

The previous prime is 399487061. The next prime is 399487133. The reversal of 399487082 is 280784993.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 399487082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397394 + ... + 398397.

It is an arithmetic number, because the mean of its divisors is an integer number (75202344).

Almost surely, 2^399487082 is an apocalyptic number.

399487082 is a deficient number, since it is larger than the sum of its proper divisors (202131670).

399487082 is a wasteful number, since it uses less digits than its factorization.

399487082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796044.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 399487082 is about 19987.1729366612. The cubic root of 399487082 is about 736.4912306745.

The spelling of 399487082 in words is "three hundred ninety-nine million, four hundred eighty-seven thousand, eighty-two".