399659002 has 4 divisors (see below), whose sum is σ = 599488506. Its totient is φ = 199829500.

The previous prime is 399658997. The next prime is 399659023. The reversal of 399659002 is 200956993.

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., 398361681 + 1297321 = 19959^2 + 1139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 399659002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99914749 + ... + 99914752.

Almost surely, 2^399659002 is an apocalyptic number.

399659002 is a deficient number, since it is larger than the sum of its proper divisors (199829504).

399659002 is a wasteful number, since it uses less digits than its factorization.

399659002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199829503.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 399659002 is about 19991.4732323558. The cubic root of 399659002 is about 736.5968656408.

The spelling of 399659002 in words is "three hundred ninety-nine million, six hundred fifty-nine thousand, two".