390394501963 has 4 divisors (see below), whose sum is σ = 390427411320. Its totient is φ = 390361592608.

The previous prime is 390394501957. The next prime is 390394501997. The reversal of 390394501963 is 369105493093.

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 390394501963 - 2³³ = 381804567371 is a prime.

It is a super-3 number, since 3×390394501963³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390394501963.

It is not an unprimeable number, because it can be changed into a prime (390394507963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16436878 + ... + 16460611.

It is an arithmetic number, because the mean of its divisors is an integer number (97606852830).

Almost surely, 2^390394501963 is an apocalyptic number.

390394501963 is a deficient number, since it is larger than the sum of its proper divisors (32909357).

390394501963 is a wasteful number, since it uses less digits than its factorization.

390394501963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32909356.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The spelling of 390394501963 in words is "three hundred ninety billion, three hundred ninety-four million, five hundred one thousand, nine hundred sixty-three".