99785290 has 16 divisors (see below), whose sum is σ = 195942240. Its totient is φ = 36285520.

The previous prime is 99785251. The next prime is 99785299. The reversal of 99785290 is 9258799.

It is not an unprimeable number, because it can be changed into a prime (99785299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453460 + ... + 453679.

It is an arithmetic number, because the mean of its divisors is an integer number (12246390).

Almost surely, 2^99785290 is an apocalyptic number.

99785290 is a deficient number, since it is larger than the sum of its proper divisors (96156950).

99785290 is a wasteful number, since it uses less digits than its factorization.

99785290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907157.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 99785290 is about 9989.2587312573. The cubic root of 99785290 is about 463.8264468100.

The spelling of 99785290 in words is "ninety-nine million, seven hundred eighty-five thousand, two hundred ninety".