421008879 has 8 divisors (see below), whose sum is σ = 562237312. Its totient is φ = 280226520.

The previous prime is 421008853. The next prime is 421008881. The reversal of 421008879 is 978800124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421008879 - 2¹² = 421004783 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 (421008779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109309 + ... + 113094.

It is an arithmetic number, because the mean of its divisors is an integer number (70279664).

Almost surely, 2^421008879 is an apocalyptic number.

421008879 is a deficient number, since it is larger than the sum of its proper divisors (141228433).

421008879 is a wasteful number, since it uses less digits than its factorization.

421008879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223037.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 421008879 is about 20518.5008955333. The cubic root of 421008879 is about 749.4863914664.

The spelling of 421008879 in words is "four hundred twenty-one million, eight thousand, eight hundred seventy-nine".