399590496 has 120 divisors (see below), whose sum is σ = 1213337664. Its totient is φ = 128874240.

The previous prime is 399590473. The next prime is 399590519. The reversal of 399590496 is 694095993.

399590496 is a `hidden beast` number, since 3 + 9 + 9 + 590 + 49 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (399590473) and next prime (399590519).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77866 + ... + 82838.

Almost surely, 2^399590496 is an apocalyptic number.

399590496 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 399590496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606668832).

399590496 is an abundant number, since it is smaller than the sum of its proper divisors (813747168).

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

399590496 is a wasteful number, since it uses less digits than its factorization.

399590496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 54.

The square root of 399590496 is about 19989.7597784466. The cubic root of 399590496 is about 736.5547762695.

The spelling of 399590496 in words is "three hundred ninety-nine million, five hundred ninety thousand, four hundred ninety-six".