83390797 has 12 divisors (see below), whose sum is σ = 102712860. Its totient is φ = 67272576.

The previous prime is 83390779. The next prime is 83390809. The reversal of 83390797 is 79709338.

It can be written as a sum of positive squares in 2 ways, for example, as 33108516 + 50282281 = 5754^2 + 7091^2 .

It is not a de Polignac number, because 83390797 - 2⁷ = 83390669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83390897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49222 + ... + 50887.

It is an arithmetic number, because the mean of its divisors is an integer number (8559405).

Almost surely, 2^83390797 is an apocalyptic number.

It is an amenable number.

83390797 is a deficient number, since it is larger than the sum of its proper divisors (19322063).

83390797 is a wasteful number, since it uses less digits than its factorization.

83390797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100140 (or 100133 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 83390797 is about 9131.8561640008. The cubic root of 83390797 is about 436.8906075732.

The spelling of 83390797 in words is "eighty-three million, three hundred ninety thousand, seven hundred ninety-seven".