421335649079 has 4 divisors (see below), whose sum is σ = 421337431176. Its totient is φ = 421333866984.

The previous prime is 421335649073. The next prime is 421335649093. The reversal of 421335649079 is 970946533124.

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 421335649079 - 2²⁴ = 421318871863 is a prime.

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 421335649079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421335649073) 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, 470129 + ... + 1031354.

It is an arithmetic number, because the mean of its divisors is an integer number (105334357794).

Almost surely, 2^421335649079 is an apocalyptic number.

421335649079 is a deficient number, since it is larger than the sum of its proper divisors (1782097).

421335649079 is a wasteful number, since it uses less digits than its factorization.

421335649079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782096.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 421335649079 in words is "four hundred twenty-one billion, three hundred thirty-five million, six hundred forty-nine thousand, seventy-nine".