399190 has 32 divisors (see below), whose sum is σ = 829440. Its totient is φ = 136800.

The previous prime is 399181. The next prime is 399197. The reversal of 399190 is 91993.

It is a super-2 number, since 2×399190² = 318705312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399197) by changing a digit.

399190 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1995 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2³⁹⁹¹⁹⁰ is an apocalyptic number.

399190 is an abundant number, since it is smaller than the sum of its proper divisors (430250).

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

399190 is a wasteful number, since it uses less digits than its factorization.

399190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 399190 is about 631.8148462960. The cubic root of 399190 is about 73.6308619390.

It can be divided in two parts, 39 and 9190, that added together give a palindrome (9229).

The spelling of 399190 in words is "three hundred ninety-nine thousand, one hundred ninety".