421689376 has 12 divisors (see below), whose sum is σ = 830201022. Its totient is φ = 210844672.

The previous prime is 421689353. The next prime is 421689397. The reversal of 421689376 is 673986124.

It can be written as a sum of positive squares in only one way, i.e., 284799376 + 136890000 = 16876^2 + 11700^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6588865 + ... + 6588928.

Almost surely, 2^421689376 is an apocalyptic number.

It is an amenable number.

421689376 is a deficient number, since it is larger than the sum of its proper divisors (408511646).

421689376 is a wasteful number, since it uses less digits than its factorization.

421689376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13177803 (or 13177795 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 421689376 is about 20535.0767225253. The cubic root of 421689376 is about 749.8899844555.

The spelling of 421689376 in words is "four hundred twenty-one million, six hundred eighty-nine thousand, three hundred seventy-six".