399908160 has 168 divisors, whose sum is σ = 1384621056. Its totient is φ = 105937920.

The previous prime is 399908147. The next prime is 399908183. The reversal of 399908160 is 61809993.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549717 + ... + 550443.

It is an arithmetic number, because the mean of its divisors is an integer number (8241792).

Almost surely, 2^399908160 is an apocalyptic number.

399908160 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 399908160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692310528).

399908160 is an abundant number, since it is smaller than the sum of its proper divisors (984712896).

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

399908160 is a wasteful number, since it uses less digits than its factorization.

399908160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 399908160 is about 19997.7038681945. The cubic root of 399908160 is about 736.7499051697.

The spelling of 399908160 in words is "three hundred ninety-nine million, nine hundred eight thousand, one hundred sixty".