421386972839 has 8 divisors (see below), whose sum is σ = 481703208960. Its totient is φ = 361100261016.

The previous prime is 421386972829. The next prime is 421386972841. The reversal of 421386972839 is 938279683124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421386972839 - 2²⁸ = 421118537383 is a prime.

It is a super-2 number, since 2×421386972839² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421386972829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7350479 + ... + 7407584.

It is an arithmetic number, because the mean of its divisors is an integer number (60212901120).

Almost surely, 2^421386972839 is an apocalyptic number.

421386972839 is a deficient number, since it is larger than the sum of its proper divisors (60316236121).

421386972839 is a wasteful number, since it uses less digits than its factorization.

421386972839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14762149.

The product of its digits is 31352832, while the sum is 62.

The spelling of 421386972839 in words is "four hundred twenty-one billion, three hundred eighty-six million, nine hundred seventy-two thousand, eight hundred thirty-nine".