386990 has 8 divisors (see below), whose sum is σ = 696600. Its totient is φ = 154792.

The previous prime is 386989. The next prime is 386993. The reversal of 386990 is 99683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×386990² = 299522520200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 386990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19340 + ... + 19359.

It is an arithmetic number, because the mean of its divisors is an integer number (87075).

2³⁸⁶⁹⁹⁰ is an apocalyptic number.

386990 is a deficient number, since it is larger than the sum of its proper divisors (309610).

386990 is a wasteful number, since it uses less digits than its factorization.

386990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38706.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 386990 is about 622.0852031675. The cubic root of 386990 is about 72.8729886261.

The spelling of 386990 in words is "three hundred eighty-six thousand, nine hundred ninety".