390005656079 has 8 divisors (see below), whose sum is σ = 420207369120. Its totient is φ = 359832697056.

The previous prime is 390005656069. The next prime is 390005656087. The reversal of 390005656079 is 970656500093.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390005656079 is a prime.

It is a super-2 number, since 2×390005656079² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390005656049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7160324 + ... + 7214585.

It is an arithmetic number, because the mean of its divisors is an integer number (52525921140).

Almost surely, 2^390005656079 is an apocalyptic number.

390005656079 is a deficient number, since it is larger than the sum of its proper divisors (30201713041).

390005656079 is a wasteful number, since it uses less digits than its factorization.

390005656079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14377009.

The product of its (nonzero) digits is 1530900, while the sum is 50.

The spelling of 390005656079 in words is "three hundred ninety billion, five million, six hundred fifty-six thousand, seventy-nine".