99415889 has 2 divisors, whose sum is σ = 99415890. Its totient is φ = 99415888.

The previous prime is 99415861. The next prime is 99415907. The reversal of 99415889 is 98851499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92313664 + 7102225 = 9608^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 99415889 - 2¹⁶ = 99350353 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99415889.

It is not a weakly prime, because it can be changed into another prime (99415859) 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, 49707944 + 49707945.

It is an arithmetic number, because the mean of its divisors is an integer number (49707945).

Almost surely, 2^99415889 is an apocalyptic number.

It is an amenable number.

99415889 is a deficient number, since it is larger than the sum of its proper divisors (1).

99415889 is an equidigital number, since it uses as much as digits as its factorization.

99415889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 53.

The square root of 99415889 is about 9970.7516767794. The cubic root of 99415889 is about 463.2533836599.

The spelling of 99415889 in words is "ninety-nine million, four hundred fifteen thousand, eight hundred eighty-nine".