83840893 has 2 divisors, whose sum is σ = 83840894. Its totient is φ = 83840892.

The previous prime is 83840881. The next prime is 83840909. The reversal of 83840893 is 39804838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48818169 + 35022724 = 6987^2 + 5918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83840893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83840803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41920446 + 41920447.

It is an arithmetic number, because the mean of its divisors is an integer number (41920447).

Almost surely, 2^83840893 is an apocalyptic number.

It is an amenable number.

83840893 is a deficient number, since it is larger than the sum of its proper divisors (1).

83840893 is an equidigital number, since it uses as much as digits as its factorization.

83840893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 83840893 is about 9156.4672772855. The cubic root of 83840893 is about 437.6752264624.

The spelling of 83840893 in words is "eighty-three million, eight hundred forty thousand, eight hundred ninety-three".