99670969 has 2 divisors, whose sum is σ = 99670970. Its totient is φ = 99670968.

The previous prime is 99670943. The next prime is 99670993. The reversal of 99670969 is 96907699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99261369 + 409600 = 9963^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 99670969 - 2⁹ = 99670457 is a prime.

It is a super-2 number, since 2×99670969² = 19868604122797922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99670919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49835484 + 49835485.

It is an arithmetic number, because the mean of its divisors is an integer number (49835485).

Almost surely, 2^99670969 is an apocalyptic number.

It is an amenable number.

99670969 is a deficient number, since it is larger than the sum of its proper divisors (1).

99670969 is an equidigital number, since it uses as much as digits as its factorization.

99670969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The square root of 99670969 is about 9983.5348950159. The cubic root of 99670969 is about 463.6492484611.

The spelling of 99670969 in words is "ninety-nine million, six hundred seventy thousand, nine hundred sixty-nine".