399258480 has 80 divisors (see below), whose sum is σ = 1239920640. Its totient is φ = 106278144.

The previous prime is 399258473. The next prime is 399258529. The reversal of 399258480 is 84852993.

399258480 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177201 + ... + 179439.

It is an arithmetic number, because the mean of its divisors is an integer number (15499008).

Almost surely, 2^399258480 is an apocalyptic number.

399258480 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 399258480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619960320).

399258480 is an abundant number, since it is smaller than the sum of its proper divisors (840662160).

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

399258480 is a wasteful number, since it uses less digits than its factorization.

399258480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 399258480 is about 19981.4534005913. The cubic root of 399258480 is about 736.3507209219.

The spelling of 399258480 in words is "three hundred ninety-nine million, two hundred fifty-eight thousand, four hundred eighty".