99287109 has 12 divisors (see below), whose sum is σ = 143730496. Its totient is φ = 66045672.

The previous prime is 99287107. The next prime is 99287131. The reversal of 99287109 is 90178299.

It is not a de Polignac number, because 99287109 - 2¹ = 99287107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99287101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7747 + ... + 16080.

Almost surely, 2^99287109 is an apocalyptic number.

It is an amenable number.

99287109 is a deficient number, since it is larger than the sum of its proper divisors (44443387).

99287109 is a wasteful number, since it uses less digits than its factorization.

99287109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24296 (or 24293 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 99287109 is about 9964.2916958507. The cubic root of 99287109 is about 463.0532696089.

The spelling of 99287109 in words is "ninety-nine million, two hundred eighty-seven thousand, one hundred nine".