390005275 has 12 divisors (see below), whose sum is σ = 527571144. Its totient is φ = 283640000.

The previous prime is 390005261. The next prime is 390005299. The reversal of 390005275 is 572500093.

It is a happy number.

It is not a de Polignac number, because 390005275 - 2¹⁵ = 389972507 is a prime.

It is a super-2 number, since 2×390005275² = 304208229055651250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708826 + ... + 709375.

It is an arithmetic number, because the mean of its divisors is an integer number (43964262).

Almost surely, 2^390005275 is an apocalyptic number.

390005275 is a deficient number, since it is larger than the sum of its proper divisors (137565869).

390005275 is a wasteful number, since it uses less digits than its factorization.

390005275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418222 (or 1418217 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 390005275 is about 19748.5512126839. The cubic root of 390005275 is about 730.6176514006.

The spelling of 390005275 in words is "three hundred ninety million, five thousand, two hundred seventy-five".