390038121 has 12 divisors (see below), whose sum is σ = 614605680. Its totient is φ = 236386680.

The previous prime is 390038113. The next prime is 390038141. The reversal of 390038121 is 121830093.

It is not a de Polignac number, because 390038121 - 2³ = 390038113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390038111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1969791 + ... + 1969988.

It is an arithmetic number, because the mean of its divisors is an integer number (51217140).

Almost surely, 2^390038121 is an apocalyptic number.

It is an amenable number.

390038121 is a deficient number, since it is larger than the sum of its proper divisors (224567559).

390038121 is a wasteful number, since it uses less digits than its factorization.

390038121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939796 (or 3939793 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 390038121 is about 19749.3828004827. The cubic root of 390038121 is about 730.6381615452.

The spelling of 390038121 in words is "three hundred ninety million, thirty-eight thousand, one hundred twenty-one".