99257109 has 16 divisors (see below), whose sum is σ = 151388160. Its totient is φ = 56666160.

The previous prime is 99257107. The next prime is 99257113. The reversal of 99257109 is 90175299.

It is not a de Polignac number, because 99257109 - 2¹ = 99257107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99257107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43212 + ... + 45450.

It is an arithmetic number, because the mean of its divisors is an integer number (9461760).

Almost surely, 2^99257109 is an apocalyptic number.

It is an amenable number.

99257109 is a deficient number, since it is larger than the sum of its proper divisors (52131051).

99257109 is a wasteful number, since it uses less digits than its factorization.

99257109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 99257109 is about 9962.7862066793. The cubic root of 99257109 is about 463.0066271071.

The spelling of 99257109 in words is "ninety-nine million, two hundred fifty-seven thousand, one hundred nine".