99580469 has 2 divisors, whose sum is σ = 99580470. Its totient is φ = 99580468.

The previous prime is 99580447. The next prime is 99580471. The reversal of 99580469 is 96408599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 36457444 = 7945^2 + 6038^2 .

It is a cyclic number.

It is not a de Polignac number, because 99580469 - 2⁸ = 99580213 is a prime.

It is a super-2 number, since 2×99580469² = 19832539612519922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 99580471, it forms a pair of twin primes.

It is a Chen 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 (99580489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49790234 + 49790235.

It is an arithmetic number, because the mean of its divisors is an integer number (49790235).

Almost surely, 2^99580469 is an apocalyptic number.

It is an amenable number.

99580469 is a deficient number, since it is larger than the sum of its proper divisors (1).

99580469 is an equidigital number, since it uses as much as digits as its factorization.

99580469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 99580469 is about 9979.0014029461. The cubic root of 99580469 is about 463.5088767173.

The spelling of 99580469 in words is "ninety-nine million, five hundred eighty thousand, four hundred sixty-nine".