99091530 has 48 divisors (see below), whose sum is σ = 258658920. Its totient is φ = 26319744.

The previous prime is 99091529. The next prime is 99091541. The reversal of 99091530 is 3519099.

It can be written as a sum of positive squares in 4 ways, for example, as 51108201 + 47983329 = 7149^2 + 6927^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22164 + ... + 26256.

Almost surely, 2^99091530 is an apocalyptic number.

99091530 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99091530 is an abundant number, since it is smaller than the sum of its proper divisors (159567390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99091530 is a wasteful number, since it uses less digits than its factorization.

99091530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375 (or 4372 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 99091530 is about 9954.4728639944. The cubic root of 99091530 is about 462.7490239169.

The spelling of 99091530 in words is "ninety-nine million, ninety-one thousand, five hundred thirty".