83400517 has 2 divisors, whose sum is σ = 83400518. Its totient is φ = 83400516.

The previous prime is 83400497. The next prime is 83400533. The reversal of 83400517 is 71500438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50211396 + 33189121 = 7086^2 + 5761^2 .

It is a cyclic number.

It is not a de Polignac number, because 83400517 - 2⁷ = 83400389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83400017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41700258 + 41700259.

It is an arithmetic number, because the mean of its divisors is an integer number (41700259).

Almost surely, 2^83400517 is an apocalyptic number.

It is an amenable number.

83400517 is a deficient number, since it is larger than the sum of its proper divisors (1).

83400517 is an equidigital number, since it uses as much as digits as its factorization.

83400517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 83400517 is about 9132.3883513569. The cubic root of 83400517 is about 436.9075815155.

The spelling of 83400517 in words is "eighty-three million, four hundred thousand, five hundred seventeen".