423797644 has 6 divisors (see below), whose sum is σ = 741645884. Its totient is φ = 211898820.

The previous prime is 423797639. The next prime is 423797669. The reversal of 423797644 is 446797324.

It is a junction number, because it is equal to n+sod(n) for n = 423797594 and 423797603.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52974702 + ... + 52974709.

Almost surely, 2^423797644 is an apocalyptic number.

It is an amenable number.

423797644 is a deficient number, since it is larger than the sum of its proper divisors (317848240).

423797644 is a wasteful number, since it uses less digits than its factorization.

423797644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105949415 (or 105949413 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 46.

The square root of 423797644 is about 20586.3460575207. The cubic root of 423797644 is about 751.1376181534.

The spelling of 423797644 in words is "four hundred twenty-three million, seven hundred ninety-seven thousand, six hundred forty-four".