399825288 has 32 divisors (see below), whose sum is σ = 1110626400. Its totient is φ = 133275024.

The previous prime is 399825281. The next prime is 399825289. The reversal of 399825288 is 882528993.

399825288 is a `hidden beast` number, since 39 + 9 + 82 + 528 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (399825281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925306 + ... + 925737.

It is an arithmetic number, because the mean of its divisors is an integer number (34707075).

Almost surely, 2^399825288 is an apocalyptic number.

It is an amenable number.

399825288 is an abundant number, since it is smaller than the sum of its proper divisors (710801112).

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

399825288 is a wasteful number, since it uses less digits than its factorization.

399825288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851058 (or 1851048 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 399825288 is about 19995.6317229539. The cubic root of 399825288 is about 736.6990100207.

The spelling of 399825288 in words is "three hundred ninety-nine million, eight hundred twenty-five thousand, two hundred eighty-eight".