99169491 has 8 divisors (see below), whose sum is σ = 137975040. Its totient is φ = 63238472.

The previous prime is 99169453. The next prime is 99169523. The reversal of 99169491 is 19496199.

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

It is a cyclic number.

It is not a de Polignac number, because 99169491 - 2¹⁷ = 99038419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99169491.

It is not an unprimeable number, because it can be changed into a prime (99169451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718551 + ... + 718688.

It is an arithmetic number, because the mean of its divisors is an integer number (17246880).

Almost surely, 2^99169491 is an apocalyptic number.

99169491 is a deficient number, since it is larger than the sum of its proper divisors (38805549).

99169491 is a wasteful number, since it uses less digits than its factorization.

99169491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437265.

The product of its digits is 157464, while the sum is 48.

The square root of 99169491 is about 9958.3879719561. The cubic root of 99169491 is about 462.8703491861.

The spelling of 99169491 in words is "ninety-nine million, one hundred sixty-nine thousand, four hundred ninety-one".