99569401 has 2 divisors, whose sum is σ = 99569402. Its totient is φ = 99569400.

The previous prime is 99569389. The next prime is 99569411. The reversal of 99569401 is 10496599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 8271376 = 9555^2 + 2876^2 .

It is a cyclic number.

It is not a de Polignac number, because 99569401 - 2⁷ = 99569273 is a prime.

It is not a weakly prime, because it can be changed into another prime (99569411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49784700 + 49784701.

It is an arithmetic number, because the mean of its divisors is an integer number (49784701).

Almost surely, 2^99569401 is an apocalyptic number.

It is an amenable number.

99569401 is a deficient number, since it is larger than the sum of its proper divisors (1).

99569401 is an equidigital number, since it uses as much as digits as its factorization.

99569401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 99569401 is about 9978.4468230281. The cubic root of 99569401 is about 463.4917036499.

The spelling of 99569401 in words is "ninety-nine million, five hundred sixty-nine thousand, four hundred one".