83008891 has 24 divisors (see below), whose sum is σ = 102454080. Its totient is φ = 66869712.

The previous prime is 83008889. The next prime is 83008901. The reversal of 83008891 is 19880038.

It is not a de Polignac number, because 83008891 - 2¹ = 83008889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83008891.

It is not an unprimeable number, because it can be changed into a prime (83008091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151480 + ... + 152026.

It is an arithmetic number, because the mean of its divisors is an integer number (4268920).

Almost surely, 2^83008891 is an apocalyptic number.

83008891 is a deficient number, since it is larger than the sum of its proper divisors (19445189).

83008891 is a wasteful number, since it uses less digits than its factorization.

83008891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 83008891 is about 9110.9215230952. The cubic root of 83008891 is about 436.2226421598. Note that the first 3 decimals are identical.

The spelling of 83008891 in words is "eighty-three million, eight thousand, eight hundred ninety-one".