9985090 has 16 divisors (see below), whose sum is σ = 18268920. Its totient is φ = 3928320.

The previous prime is 9985067. The next prime is 9985091. The reversal of 9985090 is 905899.

It can be written as a sum of positive squares in 4 ways, for example, as 4239481 + 5745609 = 2059^2 + 2397^2 .

It is not an unprimeable number, because it can be changed into a prime (9985091) 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, 7575 + ... + 8794.

Almost surely, 2^9985090 is an apocalyptic number.

9985090 is a deficient number, since it is larger than the sum of its proper divisors (8283830).

9985090 is a wasteful number, since it uses less digits than its factorization.

9985090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16437.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 9985090 is about 3159.9193027671. The cubic root of 9985090 is about 215.3363403385.

The spelling of 9985090 in words is "nine million, nine hundred eighty-five thousand, ninety".