99690292 has 12 divisors (see below), whose sum is σ = 187877956. Its totient is φ = 46010880.

The previous prime is 99690289. The next prime is 99690293. The reversal of 99690292 is 29209699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 78216336 = 4634^2 + 8844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99690293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958509 + ... + 958612.

Almost surely, 2^99690292 is an apocalyptic number.

It is an amenable number.

99690292 is a deficient number, since it is larger than the sum of its proper divisors (88187664).

99690292 is a wasteful number, since it uses less digits than its factorization.

99690292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917138 (or 1917136 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 99690292 is about 9984.5025915165. The cubic root of 99690292 is about 463.6792087582.

The spelling of 99690292 in words is "ninety-nine million, six hundred ninety thousand, two hundred ninety-two".