99169690 has 8 divisors (see below), whose sum is σ = 178505460. Its totient is φ = 39667872.

The previous prime is 99169667. The next prime is 99169699. The reversal of 99169690 is 9696199.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95004009 + 4165681 = 9747^2 + 2041^2 .

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

It is a super-2 number, since 2×99169690² = 19669254829392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99169699) 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, 4958475 + ... + 4958494.

Almost surely, 2^99169690 is an apocalyptic number.

99169690 is a deficient number, since it is larger than the sum of its proper divisors (79335770).

99169690 is a wasteful number, since it uses less digits than its factorization.

99169690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9916976.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 99169690 is about 9958.3979635281. The cubic root of 99169690 is about 462.8706587945.

The spelling of 99169690 in words is "ninety-nine million, one hundred sixty-nine thousand, six hundred ninety".