399080 has 32 divisors (see below), whose sum is σ = 980640. Its totient is φ = 144960.

The previous prime is 399079. The next prime is 399097. The reversal of 399080 is 80993.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (30645).

2³⁹⁹⁰⁸⁰ 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 399080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490320).

399080 is an abundant number, since it is smaller than the sum of its proper divisors (581560).

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

399080 is a wasteful number, since it uses less digits than its factorization.

399080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 399080 is about 631.7277894790. The cubic root of 399080 is about 73.6240981266.

It can be divided in two parts, 39 and 9080, that added together give a palindrome (9119).

The spelling of 399080 in words is "three hundred ninety-nine thousand, eighty".