421398935847 has 24 divisors (see below), whose sum is σ = 614562943280. Its totient is φ = 278223258240.

The previous prime is 421398935831. The next prime is 421398935911. The reversal of 421398935847 is 748539893124.

421398935847 is a `hidden beast` number, since 42 + 1 + 3 + 9 + 8 + 9 + 3 + 584 + 7 = 666.

It is not a de Polignac number, because 421398935847 - 2⁴ = 421398935831 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 (421398933847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1989723 + ... + 2191299.

Almost surely, 2^421398935847 is an apocalyptic number.

421398935847 is a deficient number, since it is larger than the sum of its proper divisors (193164007433).

421398935847 is a wasteful number, since it uses less digits than its factorization.

421398935847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203823 (or 203820 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 421398935847 in words is "four hundred twenty-one billion, three hundred ninety-eight million, nine hundred thirty-five thousand, eight hundred forty-seven".