83945878 has 4 divisors (see below), whose sum is σ = 125918820. Its totient is φ = 41972938.

The previous prime is 83945867. The next prime is 83945909. The reversal of 83945878 is 87854938.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20986468 + ... + 20986471.

It is an arithmetic number, because the mean of its divisors is an integer number (31479705).

Almost surely, 2^83945878 is an apocalyptic number.

83945878 is a deficient number, since it is larger than the sum of its proper divisors (41972942).

83945878 is a wasteful number, since it uses less digits than its factorization.

83945878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41972941.

The product of its digits is 1935360, while the sum is 52.

The square root of 83945878 is about 9162.1983169979. The cubic root of 83945878 is about 437.8578349175.

The spelling of 83945878 in words is "eighty-three million, nine hundred forty-five thousand, eight hundred seventy-eight".