83878994 has 16 divisors (see below), whose sum is σ = 130824960. Its totient is φ = 40290480.

The previous prime is 83878979. The next prime is 83879017. The reversal of 83878994 is 49987838.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3752 + ... + 13484.

It is an arithmetic number, because the mean of its divisors is an integer number (8176560).

Almost surely, 2^83878994 is an apocalyptic number.

83878994 is a deficient number, since it is larger than the sum of its proper divisors (46945966).

83878994 is a wasteful number, since it uses less digits than its factorization.

83878994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9905.

The product of its digits is 3483648, while the sum is 56.

The square root of 83878994 is about 9158.5475922768. The cubic root of 83878994 is about 437.7415160647.

The spelling of 83878994 in words is "eighty-three million, eight hundred seventy-eight thousand, nine hundred ninety-four".