421454979 has 36 divisors (see below), whose sum is σ = 704394600. Its totient is φ = 241971840.

The previous prime is 421454977. The next prime is 421454983. The reversal of 421454979 is 979454124.

It is not a de Polignac number, because 421454979 - 2¹ = 421454977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421454977) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10507 + ... + 30875.

Almost surely, 2^421454979 is an apocalyptic number.

421454979 is a deficient number, since it is larger than the sum of its proper divisors (282939621).

421454979 is a wasteful number, since it uses less digits than its factorization.

421454979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20416 (or 20402 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 421454979 is about 20529.3686946287. The cubic root of 421454979 is about 749.7510160184.

The spelling of 421454979 in words is "four hundred twenty-one million, four hundred fifty-four thousand, nine hundred seventy-nine".