99399625 has 16 divisors (see below), whose sum is σ = 133595280. Its totient is φ = 73401600.

The previous prime is 99399623. The next prime is 99399637. The reversal of 99399625 is 52699399.

It can be written as a sum of positive squares in 8 ways, for example, as 59305401 + 40094224 = 7701^2 + 6332^2 .

It is not a de Polignac number, because 99399625 - 2¹ = 99399623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99399623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28960 + ... + 32209.

It is an arithmetic number, because the mean of its divisors is an integer number (8349705).

Almost surely, 2^99399625 is an apocalyptic number.

It is an amenable number.

99399625 is a deficient number, since it is larger than the sum of its proper divisors (34195655).

99399625 is a wasteful number, since it uses less digits than its factorization.

99399625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61197 (or 61187 counting only the distinct ones).

The product of its digits is 1180980, while the sum is 52.

The square root of 99399625 is about 9969.9360579695. The cubic root of 99399625 is about 463.2281202136.

The spelling of 99399625 in words is "ninety-nine million, three hundred ninety-nine thousand, six hundred twenty-five".