390622290 has 32 divisors (see below), whose sum is σ = 939689856. Its totient is φ = 103921920.

The previous prime is 390622249. The next prime is 390622291. The reversal of 390622290 is 92226093.

It is a happy number.

It is a super-3 number, since 3×390622290³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (390622291) 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 15 ways as a sum of consecutive naturals, for example, 2046 + ... + 28025.

It is an arithmetic number, because the mean of its divisors is an integer number (29365308).

Almost surely, 2^390622290 is an apocalyptic number.

390622290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390622290 is an abundant number, since it is smaller than the sum of its proper divisors (549067566).

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

390622290 is a wasteful number, since it uses less digits than its factorization.

390622290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30514.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 390622290 is about 19764.1668177538. The cubic root of 390622290 is about 731.0027440772.

The spelling of 390622290 in words is "three hundred ninety million, six hundred twenty-two thousand, two hundred ninety".