99765290 has 8 divisors (see below), whose sum is σ = 179577540. Its totient is φ = 39906112.

The previous prime is 99765271. The next prime is 99765293. The reversal of 99765290 is 9256799.

It can be written as a sum of positive squares in 2 ways, for example, as 84842521 + 14922769 = 9211^2 + 3863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×99765290² = 19906226177568200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99765293) 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 3 ways as a sum of consecutive naturals, for example, 4988255 + ... + 4988274.

Almost surely, 2^99765290 is an apocalyptic number.

99765290 is a deficient number, since it is larger than the sum of its proper divisors (79812250).

99765290 is a wasteful number, since it uses less digits than its factorization.

99765290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976536.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 99765290 is about 9988.2576058089. The cubic root of 99765290 is about 463.7954564413.

The spelling of 99765290 in words is "ninety-nine million, seven hundred sixty-five thousand, two hundred ninety".