390498787505 has 16 divisors (see below), whose sum is σ = 472063213440. Its totient is φ = 310090142208.

The previous prime is 390498787501. The next prime is 390498787513. The reversal of 390498787505 is 505787894093.

It is a cyclic number.

It is not a de Polignac number, because 390498787505 - 2² = 390498787501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390498787501) by changing a digit.

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, 3632609 + ... + 3738561.

It is an arithmetic number, because the mean of its divisors is an integer number (29503950840).

Almost surely, 2^390498787505 is an apocalyptic number.

It is an amenable number.

390498787505 is a deficient number, since it is larger than the sum of its proper divisors (81564425935).

390498787505 is a wasteful number, since it uses less digits than its factorization.

390498787505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111400.

The product of its (nonzero) digits is 76204800, while the sum is 65.

The spelling of 390498787505 in words is "three hundred ninety billion, four hundred ninety-eight million, seven hundred eighty-seven thousand, five hundred five".