83939291 has 2 divisors, whose sum is σ = 83939292. Its totient is φ = 83939290.

The previous prime is 83939281. The next prime is 83939327. The reversal of 83939291 is 19293938.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83939291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83939201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41969645 + 41969646.

It is an arithmetic number, because the mean of its divisors is an integer number (41969646).

Almost surely, 2^83939291 is an apocalyptic number.

83939291 is a deficient number, since it is larger than the sum of its proper divisors (1).

83939291 is an equidigital number, since it uses as much as digits as its factorization.

83939291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 44.

The square root of 83939291 is about 9161.8388438130. The cubic root of 83939291 is about 437.8463821217.

The spelling of 83939291 in words is "eighty-three million, nine hundred thirty-nine thousand, two hundred ninety-one".