83972099 has 2 divisors, whose sum is σ = 83972100. Its totient is φ = 83972098.

The previous prime is 83972093. The next prime is 83972117. The reversal of 83972099 is 99027938.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83972099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83972093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41986049 + 41986050.

It is an arithmetic number, because the mean of its divisors is an integer number (41986050).

Almost surely, 2^83972099 is an apocalyptic number.

83972099 is a deficient number, since it is larger than the sum of its proper divisors (1).

83972099 is an equidigital number, since it uses as much as digits as its factorization.

83972099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 83972099 is about 9163.6291391566. The cubic root of 83972099 is about 437.9034193479.

The spelling of 83972099 in words is "eighty-three million, nine hundred seventy-two thousand, ninety-nine".