99160729 has 4 divisors (see below), whose sum is σ = 99792484. Its totient is φ = 98528976.

The previous prime is 99160727. The next prime is 99160739. The reversal of 99160729 is 92706199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92706199 = 193 ⋅480343.

It can be written as a sum of positive squares in 2 ways, for example, as 33177600 + 65983129 = 5760^2 + 8123^2 .

It is a cyclic number.

It is not a de Polignac number, because 99160729 - 2¹ = 99160727 is a prime.

It is a super-2 number, since 2×99160729² = 19665700351622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99160727) 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, 315642 + ... + 315955.

It is an arithmetic number, because the mean of its divisors is an integer number (24948121).

Almost surely, 2^99160729 is an apocalyptic number.

It is an amenable number.

99160729 is a deficient number, since it is larger than the sum of its proper divisors (631755).

99160729 is a wasteful number, since it uses less digits than its factorization.

99160729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631754.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 99160729 is about 9957.9480315977. The cubic root of 99160729 is about 462.8567166686.

The spelling of 99160729 in words is "ninety-nine million, one hundred sixty thousand, seven hundred twenty-nine".