396464642893 has 4 divisors (see below), whose sum is σ = 432506883168. Its totient is φ = 360422402620.

The previous prime is 396464642891. The next prime is 396464642941. The reversal of 396464642893 is 398246464693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396464642893 - 2¹ = 396464642891 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 (396464642891) 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, 18021120121 + ... + 18021120142.

It is an arithmetic number, because the mean of its divisors is an integer number (108126720792).

Almost surely, 2^396464642893 is an apocalyptic number.

It is an amenable number.

396464642893 is a deficient number, since it is larger than the sum of its proper divisors (36042240275).

396464642893 is a wasteful number, since it uses less digits than its factorization.

396464642893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36042240274.

The product of its digits is 161243136, while the sum is 64.

The spelling of 396464642893 in words is "three hundred ninety-six billion, four hundred sixty-four million, six hundred forty-two thousand, eight hundred ninety-three".