399662026882 has 4 divisors (see below), whose sum is σ = 599493040326. Its totient is φ = 199831013440.

The previous prime is 399662026867. The next prime is 399662026889. The reversal of 399662026882 is 288620266993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 252235977361 + 147426049521 = 502231^2 + 383961^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 399662026882.

It is not an unprimeable number, because it can be changed into a prime (399662026889) by changing a digit.

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 as a sum of consecutive naturals, namely, 99915506719 + ... + 99915506722.

Almost surely, 2^399662026882 is an apocalyptic number.

399662026882 is a deficient number, since it is larger than the sum of its proper divisors (199831013444).

399662026882 is a wasteful number, since it uses less digits than its factorization.

399662026882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199831013443.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 399662026882 in words is "three hundred ninety-nine billion, six hundred sixty-two million, twenty-six thousand, eight hundred eighty-two".