10421879 has 4 divisors (see below), whose sum is σ = 11223576. Its totient is φ = 9620184.

The previous prime is 10421863. The next prime is 10421881. The reversal of 10421879 is 97812401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10421879 - 2⁴ = 10421863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400829 + ... + 400854.

It is an arithmetic number, because the mean of its divisors is an integer number (2805894).

Almost surely, 2^10421879 is an apocalyptic number.

10421879 is a deficient number, since it is larger than the sum of its proper divisors (801697).

10421879 is an equidigital number, since it uses as much as digits as its factorization.

10421879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801696.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 10421879 is about 3228.2935120587. The cubic root of 10421879 is about 218.4315372505.

The spelling of 10421879 in words is "ten million, four hundred twenty-one thousand, eight hundred seventy-nine".