390909196 has 24 divisors (see below), whose sum is σ = 714873600. Its totient is φ = 186684432.

The previous prime is 390909193. The next prime is 390909221. The reversal of 390909196 is 691909093.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (390909193) 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, 69705 + ... + 75103.

It is an arithmetic number, because the mean of its divisors is an integer number (29786400).

Almost surely, 2^390909196 is an apocalyptic number.

It is an amenable number.

390909196 is a deficient number, since it is larger than the sum of its proper divisors (323964404).

390909196 is a wasteful number, since it uses less digits than its factorization.

390909196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213 (or 6211 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 390909196 is about 19771.4237221299. The cubic root of 390909196 is about 731.1816703290.

The spelling of 390909196 in words is "three hundred ninety million, nine hundred nine thousand, one hundred ninety-six".