876398421 has 16 divisors (see below), whose sum is σ = 1175546880. Its totient is φ = 580767600.

The previous prime is 876398401. The next prime is 876398441. The reversal of 876398421 is 124893678.

It is an interprime number because it is at equal distance from previous prime (876398401) and next prime (876398441).

It is not a de Polignac number, because 876398421 - 2⁹ = 876397909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (876398401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752986 + ... + 754148.

It is an arithmetic number, because the mean of its divisors is an integer number (73471680).

Almost surely, 2^876398421 is an apocalyptic number.

It is an amenable number.

876398421 is a deficient number, since it is larger than the sum of its proper divisors (299148459).

876398421 is a wasteful number, since it uses less digits than its factorization.

876398421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456.

The product of its digits is 580608, while the sum is 48.

The square root of 876398421 is about 29604.0271078109. The cubic root of 876398421 is about 956.9748598242.

The spelling of 876398421 in words is "eight hundred seventy-six million, three hundred ninety-eight thousand, four hundred twenty-one".