399848960 has 160 divisors (see below), whose sum is σ = 1118981952. Its totient is φ = 134184960.

The previous prime is 399848921. The next prime is 399848963. The reversal of 399848960 is 69848993.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 399848896 and 399848905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399848963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949550 + ... + 949970.

Almost surely, 2^399848960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399848960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559490976).

399848960 is an abundant number, since it is smaller than the sum of its proper divisors (719132992).

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

399848960 is an equidigital number, since it uses as much as digits as its factorization.

399848960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 399848960 is about 19996.2236434783. The cubic root of 399848960 is about 736.7135486999.

The spelling of 399848960 in words is "three hundred ninety-nine million, eight hundred forty-eight thousand, nine hundred sixty".