99387697 has 4 divisors (see below), whose sum is σ = 99414900. Its totient is φ = 99360496.

The previous prime is 99387679. The next prime is 99387719. The reversal of 99387697 is 79678399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79678399 = 29 ⋅2747531.

It can be written as a sum of positive squares in 2 ways, for example, as 7974976 + 91412721 = 2824^2 + 9561^2 .

It is a cyclic number.

It is not a de Polignac number, because 99387697 - 2⁷ = 99387569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99387647) 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, 7078 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (24853725).

Almost surely, 2^99387697 is an apocalyptic number.

It is an amenable number.

99387697 is a deficient number, since it is larger than the sum of its proper divisors (27203).

99387697 is a wasteful number, since it uses less digits than its factorization.

99387697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27202.

The product of its digits is 5143824, while the sum is 58.

The square root of 99387697 is about 9969.3378416021. The cubic root of 99387697 is about 463.2095902776.

The spelling of 99387697 in words is "ninety-nine million, three hundred eighty-seven thousand, six hundred ninety-seven".