99109012 has 6 divisors (see below), whose sum is σ = 173440778. Its totient is φ = 49554504.

The previous prime is 99108991. The next prime is 99109027. The reversal of 99109012 is 21090199.

It can be written as a sum of positive squares in only one way, i.e., 99082116 + 26896 = 9954^2 + 164^2 .

It is a super-2 number, since 2×99109012² = 19645192519232288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12388623 + ... + 12388630.

Almost surely, 2^99109012 is an apocalyptic number.

It is an amenable number.

99109012 is a deficient number, since it is larger than the sum of its proper divisors (74331766).

99109012 is a wasteful number, since it uses less digits than its factorization.

99109012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24777257 (or 24777255 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 99109012 is about 9955.3509229961. The cubic root of 99109012 is about 462.7762354681.

The spelling of 99109012 in words is "ninety-nine million, one hundred nine thousand, twelve".