83139850 has 24 divisors (see below), whose sum is σ = 157266720. Its totient is φ = 32691120.

The previous prime is 83139811. The next prime is 83139853. The reversal of 83139850 is 5893138.

It is not an unprimeable number, because it can be changed into a prime (83139853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11142 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (6552780).

Almost surely, 2^83139850 is an apocalyptic number.

83139850 is a deficient number, since it is larger than the sum of its proper divisors (74126870).

83139850 is a wasteful number, since it uses less digits than its factorization.

83139850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28254 (or 28249 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 83139850 is about 9118.1056146548. The cubic root of 83139850 is about 436.4519238842.

The spelling of 83139850 in words is "eighty-three million, one hundred thirty-nine thousand, eight hundred fifty".