83814817 has 2 divisors, whose sum is σ = 83814818. Its totient is φ = 83814816.

The previous prime is 83814803. The next prime is 83814821. The reversal of 83814817 is 71841838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77281681 + 6533136 = 8791^2 + 2556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83814817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83814817.

It is not a weakly prime, because it can be changed into another prime (83814847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41907408 + 41907409.

It is an arithmetic number, because the mean of its divisors is an integer number (41907409).

Almost surely, 2^83814817 is an apocalyptic number.

It is an amenable number.

83814817 is a deficient number, since it is larger than the sum of its proper divisors (1).

83814817 is an equidigital number, since it uses as much as digits as its factorization.

83814817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 40.

The square root of 83814817 is about 9155.0432549497. The cubic root of 83814817 is about 437.6298468463.

The spelling of 83814817 in words is "eighty-three million, eight hundred fourteen thousand, eight hundred seventeen".