90044994 has 32 divisors (see below), whose sum is σ = 195773760. Its totient is φ = 27444672.

The previous prime is 90044993. The next prime is 90045017. The reversal of 90044994 is 49944009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (90044993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2952 + ... + 13740.

It is an arithmetic number, because the mean of its divisors is an integer number (6117930).

Almost surely, 2^90044994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90044994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97886880).

90044994 is an abundant number, since it is smaller than the sum of its proper divisors (105728766).

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

90044994 is a wasteful number, since it uses less digits than its factorization.

90044994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 90044994 is about 9489.2040762121. The cubic root of 90044994 is about 448.2151423346.

The spelling of 90044994 in words is "ninety million, forty-four thousand, nine hundred ninety-four".