2089440990 has 96 divisors (see below), whose sum is σ = 6686237376. Its totient is φ = 440847360.

The previous prime is 2089440989. The next prime is 2089441033. The reversal of 2089440990 is 990449802.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119371 + ... + 135750.

It is an arithmetic number, because the mean of its divisors is an integer number (69648306).

Almost surely, 2^2089440990 is an apocalyptic number.

2089440990 is an abundant number, since it is smaller than the sum of its proper divisors (4596796386).

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

2089440990 is a wasteful number, since it uses less digits than its factorization.

2089440990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255154 (or 255151 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2089440990 is about 45710.4035204241. The cubic root of 2089440990 is about 1278.4292642794.

The spelling of 2089440990 in words is "two billion, eighty-nine million, four hundred forty thousand, nine hundred ninety".