390379515 has 16 divisors (see below), whose sum is σ = 626174496. Its totient is φ = 207680000.

The previous prime is 390379501. The next prime is 390379537. The reversal of 390379515 is 515973093.

It is a happy number.

It is not a de Polignac number, because 390379515 - 2⁷ = 390379387 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26436 + ... + 38465.

It is an arithmetic number, because the mean of its divisors is an integer number (39135906).

Almost surely, 2^390379515 is an apocalyptic number.

390379515 is a deficient number, since it is larger than the sum of its proper divisors (235794981).

390379515 is a wasteful number, since it uses less digits than its factorization.

390379515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65310.

The product of its (nonzero) digits is 127575, while the sum is 42.

The square root of 390379515 is about 19758.0240661864. The cubic root of 390379515 is about 730.8512712652.

The spelling of 390379515 in words is "three hundred ninety million, three hundred seventy-nine thousand, five hundred fifteen".