99707090 has 32 divisors (see below), whose sum is σ = 207118080. Its totient is φ = 33850944.

The previous prime is 99707077. The next prime is 99707131. The reversal of 99707090 is 9070799.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296 + ... + 14124.

It is an arithmetic number, because the mean of its divisors is an integer number (6472440).

Almost surely, 2^99707090 is an apocalyptic number.

99707090 is an abundant number, since it is smaller than the sum of its proper divisors (107410990).

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

99707090 is a wasteful number, since it uses less digits than its factorization.

99707090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13946.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 99707090 is about 9985.3437597311. The cubic root of 99707090 is about 463.7052508992.

The spelling of 99707090 in words is "ninety-nine million, seven hundred seven thousand, ninety".