390134523679 has 4 divisors (see below), whose sum is σ = 390140087776. Its totient is φ = 390128959584.

The previous prime is 390134523671. The next prime is 390134523733. The reversal of 390134523679 is 976325431093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390134523679 - 2³ = 390134523671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390134523671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675514 + ... + 2817559.

It is an arithmetic number, because the mean of its divisors is an integer number (97535021944).

Almost surely, 2^390134523679 is an apocalyptic number.

390134523679 is a deficient number, since it is larger than the sum of its proper divisors (5564097).

390134523679 is an equidigital number, since it uses as much as digits as its factorization.

390134523679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564096.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 390134523679 in words is "three hundred ninety billion, one hundred thirty-four million, five hundred twenty-three thousand, six hundred seventy-nine".