99969647 has 2 divisors, whose sum is σ = 99969648. Its totient is φ = 99969646.

The previous prime is 99969619. The next prime is 99969679. The reversal of 99969647 is 74696999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99969647 - 2⁸ = 99969391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99969347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49984823 + 49984824.

It is an arithmetic number, because the mean of its divisors is an integer number (49984824).

Almost surely, 2^99969647 is an apocalyptic number.

99969647 is a deficient number, since it is larger than the sum of its proper divisors (1).

99969647 is an equidigital number, since it uses as much as digits as its factorization.

99969647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488, while the sum is 59.

The square root of 99969647 is about 9998.4822348194. The cubic root of 99969647 is about 464.1119165604. Note that the first 3 decimals are identical.

The spelling of 99969647 in words is "ninety-nine million, nine hundred sixty-nine thousand, six hundred forty-seven".