390390190 has 8 divisors (see below), whose sum is σ = 702702360. Its totient is φ = 156156072.

The previous prime is 390390181. The next prime is 390390191. The reversal of 390390190 is 91093093.

It is a happy number.

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

It is a super-2 number, since 2×390390190² = 304809000896472200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390390191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19519500 + ... + 19519519.

It is an arithmetic number, because the mean of its divisors is an integer number (87837795).

Almost surely, 2^390390190 is an apocalyptic number.

390390190 is a deficient number, since it is larger than the sum of its proper divisors (312312170).

390390190 is a wasteful number, since it uses less digits than its factorization.

390390190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39039026.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 390390190 is about 19758.2942077498. The cubic root of 390390190 is about 730.8579329588.

The spelling of 390390190 in words is "three hundred ninety million, three hundred ninety thousand, one hundred ninety".