99907097 has 4 divisors (see below), whose sum is σ = 99959220. Its totient is φ = 99854976.

The previous prime is 99907091. The next prime is 99907099. The reversal of 99907097 is 79070999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87403801 + 12503296 = 9349^2 + 3536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99907097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99907091) 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, 23072 + ... + 27057.

It is an arithmetic number, because the mean of its divisors is an integer number (24989805).

Almost surely, 2^99907097 is an apocalyptic number.

It is an amenable number.

99907097 is a deficient number, since it is larger than the sum of its proper divisors (52123).

99907097 is a wasteful number, since it uses less digits than its factorization.

99907097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52122.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 99907097 is about 9995.3537706276. The cubic root of 99907097 is about 464.0150996498.

The spelling of 99907097 in words is "ninety-nine million, nine hundred seven thousand, ninety-seven".