83975591 has 8 divisors (see below), whose sum is σ = 96904704. Its totient is φ = 71279640.

The previous prime is 83975581. The next prime is 83975627. The reversal of 83975591 is 19557938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83975591 - 2²⁶ = 16866727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83975531) 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 7 ways as a sum of consecutive naturals, for example, 57515 + ... + 58956.

It is an arithmetic number, because the mean of its divisors is an integer number (12113088).

Almost surely, 2^83975591 is an apocalyptic number.

83975591 is a deficient number, since it is larger than the sum of its proper divisors (12929113).

83975591 is a wasteful number, since it uses less digits than its factorization.

83975591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116581.

The product of its digits is 340200, while the sum is 47.

The square root of 83975591 is about 9163.8196730403. The cubic root of 83975591 is about 437.9094893702.

The spelling of 83975591 in words is "eighty-three million, nine hundred seventy-five thousand, five hundred ninety-one".