399389202 has 12 divisors (see below), whose sum is σ = 865343310. Its totient is φ = 133129728.

The previous prime is 399389197. The next prime is 399389233. The reversal of 399389202 is 202983993.

It can be written as a sum of positive squares in only one way, i.e., 393585921 + 5803281 = 19839^2 + 2409^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11094127 + ... + 11094162.

Almost surely, 2^399389202 is an apocalyptic number.

399389202 is an abundant number, since it is smaller than the sum of its proper divisors (465954108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399389202 is a wasteful number, since it uses less digits than its factorization.

399389202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22188297 (or 22188294 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 399389202 is about 19984.7242162608. The cubic root of 399389202 is about 736.4310754962.

The spelling of 399389202 in words is "three hundred ninety-nine million, three hundred eighty-nine thousand, two hundred two".