390115942 has 32 divisors (see below), whose sum is σ = 634032000. Its totient is φ = 179454528.

The previous prime is 390115931. The next prime is 390115951. The reversal of 390115942 is 249511093.

It is a junction number, because it is equal to n+sod(n) for n = 390115898 and 390115907.

It is a congruent number.

It is an unprimeable number.

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, 184809 + ... + 186907.

It is an arithmetic number, because the mean of its divisors is an integer number (19813500).

Almost surely, 2^390115942 is an apocalyptic number.

390115942 is a deficient number, since it is larger than the sum of its proper divisors (243916058).

390115942 is a wasteful number, since it uses less digits than its factorization.

390115942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 390115942 is about 19751.3529156866. The cubic root of 390115942 is about 730.6867509934.

The spelling of 390115942 in words is "three hundred ninety million, one hundred fifteen thousand, nine hundred forty-two".