99540529 has 9 divisors (see below), whose sum is σ = 109533081. Its totient is φ = 90391620.

The previous prime is 99540523. The next prime is 99540533. The reversal of 99540529 is 92504599.

It is a happy number.

The square root of 99540529 is 9977.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 99540529 - 2⁷ = 99540401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99540523) 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 8 ways as a sum of consecutive naturals, for example, 109294 + ... + 110200.

Almost surely, 2^99540529 is an apocalyptic number.

99540529 is the 9977-th square number.

99540529 is the 4989-th centered octagonal number.

It is an amenable number.

99540529 is a deficient number, since it is larger than the sum of its proper divisors (9992552).

99540529 is an frugal number, since it uses more digits than its factorization.

99540529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The cubic root of 99540529 is about 463.4468999719.

The spelling of 99540529 in words is "ninety-nine million, five hundred forty thousand, five hundred twenty-nine".