99469889 has 2 divisors, whose sum is σ = 99469890. Its totient is φ = 99469888.

The previous prime is 99469861. The next prime is 99469901. The reversal of 99469889 is 98896499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 46471489 = 7280^2 + 6817^2 .

It is a cyclic number.

It is not a de Polignac number, because 99469889 - 2⁸ = 99469633 is a prime.

It is not a weakly prime, because it can be changed into another prime (99469859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49734944 + 49734945.

It is an arithmetic number, because the mean of its divisors is an integer number (49734945).

Almost surely, 2^99469889 is an apocalyptic number.

It is an amenable number.

99469889 is a deficient number, since it is larger than the sum of its proper divisors (1).

99469889 is an equidigital number, since it uses as much as digits as its factorization.

99469889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 62.

The square root of 99469889 is about 9973.4592293747. The cubic root of 99469889 is about 463.3372440135.

The spelling of 99469889 in words is "ninety-nine million, four hundred sixty-nine thousand, eight hundred eighty-nine".