83952569 has 2 divisors, whose sum is σ = 83952570. Its totient is φ = 83952568.

The previous prime is 83952467. The next prime is 83952571. The reversal of 83952569 is 96525938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73324969 + 10627600 = 8563^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 83952569 - 2²⁰ = 82903993 is a prime.

It is a super-2 number, since 2×83952569² = 14096067683399522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 83952571, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83952269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41976284 + 41976285.

It is an arithmetic number, because the mean of its divisors is an integer number (41976285).

Almost surely, 2^83952569 is an apocalyptic number.

It is an amenable number.

83952569 is a deficient number, since it is larger than the sum of its proper divisors (1).

83952569 is an equidigital number, since it uses as much as digits as its factorization.

83952569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 83952569 is about 9162.5634513492. The cubic root of 83952569 is about 437.8694679244.

The spelling of 83952569 in words is "eighty-three million, nine hundred fifty-two thousand, five hundred sixty-nine".