399119723760 has 160 divisors (see below), whose sum is σ = 1257714501120. Its totient is φ = 104680576000.

The previous prime is 399119723759. The next prime is 399119723773. The reversal of 399119723760 is 67327911993.

It is a self number, because there is not a number n which added to its sum of digits gives 399119723760.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7111810 + ... + 7167710.

It is an arithmetic number, because the mean of its divisors is an integer number (7860715632).

Almost surely, 2^399119723760 is an apocalyptic number.

399119723760 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 399119723760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628857250560).

399119723760 is an abundant number, since it is smaller than the sum of its proper divisors (858594777360).

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

399119723760 is a wasteful number, since it uses less digits than its factorization.

399119723760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56407 (or 56401 counting only the distinct ones).

The product of its (nonzero) digits is 3857868, while the sum is 57.

The spelling of 399119723760 in words is "three hundred ninety-nine billion, one hundred nineteen million, seven hundred twenty-three thousand, seven hundred sixty".