399180 has 24 divisors (see below), whose sum is σ = 1117872. Its totient is φ = 106432.

The previous prime is 399173. The next prime is 399181. The reversal of 399180 is 81993.

399180 = 36² + 37² + ... + 107².

It is a happy number.

399180 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 399180.

It is not an unprimeable number, because it can be changed into a prime (399181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (46578).

2³⁹⁹¹⁸⁰ is an apocalyptic number.

399180 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399180 is an abundant number, since it is smaller than the sum of its proper divisors (718692).

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

399180 is a wasteful number, since it uses less digits than its factorization.

399180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665 (or 6663 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 399180 is about 631.8069325356. The cubic root of 399180 is about 73.6302470983.

The spelling of 399180 in words is "three hundred ninety-nine thousand, one hundred eighty".