83088981 has 12 divisors (see below), whose sum is σ = 120307980. Its totient is φ = 55258560.

The previous prime is 83088931. The next prime is 83088991. The reversal of 83088981 is 18988038.

It can be written as a sum of positive squares in 2 ways, for example, as 41602500 + 41486481 = 6450^2 + 6441^2 .

It is not a de Polignac number, because 83088981 - 2⁶ = 83088917 is a prime.

It is a super-2 number, since 2×83088981² = 13807557527236722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83088931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7176 + ... + 14753.

It is an arithmetic number, because the mean of its divisors is an integer number (10025665).

Almost surely, 2^83088981 is an apocalyptic number.

It is an amenable number.

83088981 is a deficient number, since it is larger than the sum of its proper divisors (37218999).

83088981 is a wasteful number, since it uses less digits than its factorization.

83088981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22356 (or 22353 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 83088981 is about 9115.3157378118. The cubic root of 83088981 is about 436.3628915589.

The spelling of 83088981 in words is "eighty-three million, eighty-eight thousand, nine hundred eighty-one".