83087879 has 6 divisors (see below), whose sum is σ = 96653304. Its totient is φ = 71218140.

The previous prime is 83087861. The next prime is 83087881. The reversal of 83087879 is 97878038.

It is a de Polignac number, because none of the positive numbers 2^k-83087879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83087479) 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, 847787 + ... + 847884.

It is an arithmetic number, because the mean of its divisors is an integer number (16108884).

Almost surely, 2^83087879 is an apocalyptic number.

83087879 is a deficient number, since it is larger than the sum of its proper divisors (13565425).

83087879 is a wasteful number, since it uses less digits than its factorization.

83087879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695685 (or 1695678 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 83087879 is about 9115.2552898973. The cubic root of 83087879 is about 436.3609624060.

The spelling of 83087879 in words is "eighty-three million, eighty-seven thousand, eight hundred seventy-nine".