390275538 has 8 divisors (see below), whose sum is σ = 780551088. Its totient is φ = 130091844.

The previous prime is 390275537. The next prime is 390275539. The reversal of 390275538 is 835572093.

It is an interprime number because it is at equal distance from previous prime (390275537) and next prime (390275539).

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

390275538 is an admirable number.

It is a super-2 number, since 2×390275538² = 304629991122378888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390275538.

It is not an unprimeable number, because it can be changed into a prime (390275537) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 32522956 + ... + 32522967.

It is an arithmetic number, because the mean of its divisors is an integer number (97568886).

Almost surely, 2^390275538 is an apocalyptic number.

390275538 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.

390275538 is a wasteful number, since it uses less digits than its factorization.

390275538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65045928.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 390275538 is about 19755.3926308742. The cubic root of 390275538 is about 730.7863784558.

The spelling of 390275538 in words is "three hundred ninety million, two hundred seventy-five thousand, five hundred thirty-eight".