99257889 has 16 divisors (see below), whose sum is σ = 135810752. Its totient is φ = 64447488.

The previous prime is 99257863. The next prime is 99257909. The reversal of 99257889 is 98875299.

It is not a de Polignac number, because 99257889 - 2¹¹ = 99255841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99257819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54969 + ... + 56745.

It is an arithmetic number, because the mean of its divisors is an integer number (8488172).

Almost surely, 2^99257889 is an apocalyptic number.

It is an amenable number.

99257889 is a deficient number, since it is larger than the sum of its proper divisors (36552863).

99257889 is a wasteful number, since it uses less digits than its factorization.

99257889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its digits is 3265920, while the sum is 57.

The square root of 99257889 is about 9962.8253522783. The cubic root of 99257889 is about 463.0078399312.

The spelling of 99257889 in words is "ninety-nine million, two hundred fifty-seven thousand, eight hundred eighty-nine".