874579391 has 6 divisors (see below), whose sum is σ = 1017367920. Its totient is φ = 749639436.

The previous prime is 874579369. The next prime is 874579403. The reversal of 874579391 is 193975478.

It is not a de Polignac number, because 874579391 - 2⁶ = 874579327 is a prime.

It is a super-2 number, since 2×874579391² = 1529778222323861762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874579091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8924231 + ... + 8924328.

It is an arithmetic number, because the mean of its divisors is an integer number (169561320).

Almost surely, 2^874579391 is an apocalyptic number.

874579391 is a deficient number, since it is larger than the sum of its proper divisors (142788529).

874579391 is a wasteful number, since it uses less digits than its factorization.

874579391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17848573 (or 17848566 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 874579391 is about 29573.2884711863. The cubic root of 874579391 is about 956.3123104284.

The spelling of 874579391 in words is "eight hundred seventy-four million, five hundred seventy-nine thousand, three hundred ninety-one".