83475891 has 12 divisors (see below), whose sum is σ = 124734480. Its totient is φ = 53731440.

The previous prime is 83475871. The next prime is 83475979. The reversal of 83475891 is 19857438.

It is a de Polignac number, because none of the positive numbers 2^k-83475891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83475851) 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, 159655 + ... + 160176.

It is an arithmetic number, because the mean of its divisors is an integer number (10394540).

Almost surely, 2^83475891 is an apocalyptic number.

83475891 is a deficient number, since it is larger than the sum of its proper divisors (41258589).

83475891 is a wasteful number, since it uses less digits than its factorization.

83475891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319866 (or 319863 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 83475891 is about 9136.5141602254. The cubic root of 83475891 is about 437.0391616603.

The spelling of 83475891 in words is "eighty-three million, four hundred seventy-five thousand, eight hundred ninety-one".