879639403 has 4 divisors (see below), whose sum is σ = 887860440. Its totient is φ = 871418368.

The previous prime is 879639373. The next prime is 879639413. The reversal of 879639403 is 304936978.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879639403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879639413) 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, 4110358 + ... + 4110571.

It is an arithmetic number, because the mean of its divisors is an integer number (221965110).

Almost surely, 2^879639403 is an apocalyptic number.

879639403 is a deficient number, since it is larger than the sum of its proper divisors (8221037).

879639403 is a wasteful number, since it uses less digits than its factorization.

879639403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221036.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 879639403 is about 29658.7154644297. The cubic root of 879639403 is about 958.1530617401.

The spelling of 879639403 in words is "eight hundred seventy-nine million, six hundred thirty-nine thousand, four hundred three".