390121626 has 8 divisors (see below), whose sum is σ = 780243264. Its totient is φ = 130040540.

The previous prime is 390121609. The next prime is 390121651. The reversal of 390121626 is 626121093.

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

390121626 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 390121593 and 390121602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32510130 + ... + 32510141.

It is an arithmetic number, because the mean of its divisors is an integer number (97530408).

Almost surely, 2^390121626 is an apocalyptic number.

390121626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

390121626 is a wasteful number, since it uses less digits than its factorization.

390121626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65020276.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 390121626 is about 19751.4968040399. The cubic root of 390121626 is about 730.6902996848.

The spelling of 390121626 in words is "three hundred ninety million, one hundred twenty-one thousand, six hundred twenty-six".