421885877 has 16 divisors (see below), whose sum is σ = 497382912. Its totient is φ = 350282880.

The previous prime is 421885853. The next prime is 421885879. The reversal of 421885877 is 778588124.

It is not a de Polignac number, because 421885877 - 2²⁶ = 354777013 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421885879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56852 + ... + 63842.

It is an arithmetic number, because the mean of its divisors is an integer number (31086432).

Almost surely, 2^421885877 is an apocalyptic number.

It is an amenable number.

421885877 is a deficient number, since it is larger than the sum of its proper divisors (75497035).

421885877 is a wasteful number, since it uses less digits than its factorization.

421885877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268.

The product of its digits is 1003520, while the sum is 50.

The square root of 421885877 is about 20539.8606859930. The cubic root of 421885877 is about 750.0064455742.

The spelling of 421885877 in words is "four hundred twenty-one million, eight hundred eighty-five thousand, eight hundred seventy-seven".