399084822720 has 280 divisors, whose sum is σ = 1420444833984. Its totient is φ = 106360418304.

The previous prime is 399084822709. The next prime is 399084822757. The reversal of 399084822720 is 27228480993.

It is a happy number.

399084822720 is a `hidden beast` number, since 3 + 9 + 90 + 8 + 482 + 2 + 72 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59534889 + ... + 59541591.

Almost surely, 2^399084822720 is an apocalyptic number.

399084822720 is a gapful number since it is divisible by the number (30) 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 399084822720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710222416992).

399084822720 is an abundant number, since it is smaller than the sum of its proper divisors (1021360011264).

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

399084822720 is a wasteful number, since it uses less digits than its factorization.

399084822720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9029 (or 9010 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 399084822720 in words is "three hundred ninety-nine billion, eighty-four million, eight hundred twenty-two thousand, seven hundred twenty".