83915693 has 2 divisors, whose sum is σ = 83915694. Its totient is φ = 83915692.

The previous prime is 83915653. The next prime is 83915717. The reversal of 83915693 is 39651938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58644964 + 25270729 = 7658^2 + 5027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83915693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83915653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41957846 + 41957847.

It is an arithmetic number, because the mean of its divisors is an integer number (41957847).

Almost surely, 2^83915693 is an apocalyptic number.

It is an amenable number.

83915693 is a deficient number, since it is larger than the sum of its proper divisors (1).

83915693 is an equidigital number, since it uses as much as digits as its factorization.

83915693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 83915693 is about 9160.5509113808. The cubic root of 83915693 is about 437.8053474358.

The spelling of 83915693 in words is "eighty-three million, nine hundred fifteen thousand, six hundred ninety-three".