83981177 has 4 divisors (see below), whose sum is σ = 95978496. Its totient is φ = 71983860.

The previous prime is 83981123. The next prime is 83981179. The reversal of 83981177 is 77118938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83981177 - 2⁶ = 83981113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83981179) 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 3 ways as a sum of consecutive naturals, for example, 5998649 + ... + 5998662.

It is an arithmetic number, because the mean of its divisors is an integer number (23994624).

Almost surely, 2^83981177 is an apocalyptic number.

It is an amenable number.

83981177 is a deficient number, since it is larger than the sum of its proper divisors (11997319).

83981177 is a wasteful number, since it uses less digits than its factorization.

83981177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11997318.

The product of its digits is 84672, while the sum is 44.

The square root of 83981177 is about 9164.1244535416. The cubic root of 83981177 is about 437.9191989701.

The spelling of 83981177 in words is "eighty-three million, nine hundred eighty-one thousand, one hundred seventy-seven".