83994397 has 2 divisors, whose sum is σ = 83994398. Its totient is φ = 83994396.

The previous prime is 83994341. The next prime is 83994409. The reversal of 83994397 is 79349938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49196196 + 34798201 = 7014^2 + 5899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83994397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83994797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41997198 + 41997199.

It is an arithmetic number, because the mean of its divisors is an integer number (41997199).

Almost surely, 2^83994397 is an apocalyptic number.

It is an amenable number.

83994397 is a deficient number, since it is larger than the sum of its proper divisors (1).

83994397 is an equidigital number, since it uses as much as digits as its factorization.

83994397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 83994397 is about 9164.8457161046. The cubic root of 83994397 is about 437.9421762938.

The spelling of 83994397 in words is "eighty-three million, nine hundred ninety-four thousand, three hundred ninety-seven".