421989292 has 24 divisors (see below), whose sum is σ = 761813360. Its totient is φ = 204379200.

The previous prime is 421989287. The next prime is 421989301. The reversal of 421989292 is 292989124.

It is a super-2 number, since 2×421989292² = 356149925125322528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27667 + ... + 40117.

Almost surely, 2^421989292 is an apocalyptic number.

It is an amenable number.

421989292 is a deficient number, since it is larger than the sum of its proper divisors (339824068).

421989292 is a wasteful number, since it uses less digits than its factorization.

421989292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12721 (or 12719 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 421989292 is about 20542.3779538787. The cubic root of 421989292 is about 750.0677224773.

The spelling of 421989292 in words is "four hundred twenty-one million, nine hundred eighty-nine thousand, two hundred ninety-two".