396621869263 has 4 divisors (see below), whose sum is σ = 396623163168. Its totient is φ = 396620575360.

The previous prime is 396621869221. The next prime is 396621869269. The reversal of 396621869263 is 362968126693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396621869263 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 (396621869269) 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, 101370 + ... + 896392.

It is an arithmetic number, because the mean of its divisors is an integer number (99155790792).

Almost surely, 2^396621869263 is an apocalyptic number.

396621869263 is a deficient number, since it is larger than the sum of its proper divisors (1293905).

396621869263 is an equidigital number, since it uses as much as digits as its factorization.

396621869263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293904.

The product of its digits is 30233088, while the sum is 61.

The spelling of 396621869263 in words is "three hundred ninety-six billion, six hundred twenty-one million, eight hundred sixty-nine thousand, two hundred sixty-three".