399102066 has 40 divisors (see below), whose sum is σ = 975587184. Its totient is φ = 120939480.

The previous prime is 399102061. The next prime is 399102071. The reversal of 399102066 is 660201993.

It is an interprime number because it is at equal distance from previous prime (399102061) and next prime (399102071).

It is a self number, because there is not a number n which added to its sum of digits gives 399102066.

It is not an unprimeable number, because it can be changed into a prime (399102061) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 110200 + ... + 113763.

Almost surely, 2^399102066 is an apocalyptic number.

399102066 is an abundant number, since it is smaller than the sum of its proper divisors (576485118).

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

399102066 is a wasteful number, since it uses less digits than its factorization.

399102066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223988 (or 223979 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 399102066 is about 19977.5390376292. The cubic root of 399102066 is about 736.2545504699.

The spelling of 399102066 in words is "three hundred ninety-nine million, one hundred two thousand, sixty-six".