99730913 has 8 divisors (see below), whose sum is σ = 104863080. Its totient is φ = 94711680.

The previous prime is 99730879. The next prime is 99730957. The reversal of 99730913 is 31903799.

It can be written as a sum of positive squares in 4 ways, for example, as 4804864 + 94926049 = 2192^2 + 9743^2 .

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

It is not a de Polignac number, because 99730913 - 2⁶ = 99730849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99730963) 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, 26420 + ... + 29957.

It is an arithmetic number, because the mean of its divisors is an integer number (13107885).

Almost surely, 2^99730913 is an apocalyptic number.

It is an amenable number.

99730913 is a deficient number, since it is larger than the sum of its proper divisors (5132167).

99730913 is a wasteful number, since it uses less digits than its factorization.

99730913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56467.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 99730913 is about 9986.5365868253. The cubic root of 99730913 is about 463.7421789669.

The spelling of 99730913 in words is "ninety-nine million, seven hundred thirty thousand, nine hundred thirteen".