399079296 has 288 divisors, whose sum is σ = 1446135600. Its totient is φ = 103403520.

The previous prime is 399079277. The next prime is 399079297. The reversal of 399079296 is 692970993.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399079297) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 975540 + ... + 975948.

Almost surely, 2^399079296 is an apocalyptic number.

399079296 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399079296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723067800).

399079296 is an abundant number, since it is smaller than the sum of its proper divisors (1047056304).

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

399079296 is a wasteful number, since it uses less digits than its factorization.

399079296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 54.

The square root of 399079296 is about 19976.9691394866. The cubic root of 399079296 is about 736.2405483417.

The spelling of 399079296 in words is "three hundred ninety-nine million, seventy-nine thousand, two hundred ninety-six".