395990 has 16 divisors (see below), whose sum is σ = 814752. Its totient is φ = 135744.

The previous prime is 395971. The next prime is 396001. The reversal of 395990 is 99593.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 395990.

It is a congruent number.

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, 2759 + ... + 2898.

It is an arithmetic number, because the mean of its divisors is an integer number (50922).

2³⁹⁵⁹⁹⁰ is an apocalyptic number.

395990 is an abundant number, since it is smaller than the sum of its proper divisors (418762).

It is a weird number, because it is abundant, but not a pseudoperfect number.

395990 is a wasteful number, since it uses less digits than its factorization.

395990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671.

The product of its (nonzero) digits is 10935, while the sum is 35.

The square root of 395990 is about 629.2773633304. The cubic root of 395990 is about 73.4335864823.

The spelling of 395990 in words is "three hundred ninety-five thousand, nine hundred ninety".