399602764 has 12 divisors (see below), whose sum is σ = 762878088. Its totient is φ = 181637600.

The previous prime is 399602761. The next prime is 399602767. The reversal of 399602764 is 467206993.

It is an interprime number because it is at equal distance from previous prime (399602761) and next prime (399602767).

It is not an unprimeable number, because it can be changed into a prime (399602761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540897 + ... + 4540984.

It is an arithmetic number, because the mean of its divisors is an integer number (63573174).

Almost surely, 2^399602764 is an apocalyptic number.

It is an amenable number.

399602764 is a deficient number, since it is larger than the sum of its proper divisors (363275324).

399602764 is a wasteful number, since it uses less digits than its factorization.

399602764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9081896 (or 9081894 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 399602764 is about 19990.0666332056. The cubic root of 399602764 is about 736.5623139542.

It can be divided in two parts, 39960 and 2764, that added together give a palindrome (42724).

The spelling of 399602764 in words is "three hundred ninety-nine million, six hundred two thousand, seven hundred sixty-four".