2905593990 has 64 divisors (see below), whose sum is σ = 7556080896. Its totient is φ = 710819712.

The previous prime is 2905593953. The next prime is 2905593991. The reversal of 2905593990 is 993955092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905593991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40717 + ... + 86423.

It is an arithmetic number, because the mean of its divisors is an integer number (118063764).

Almost surely, 2^2905593990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2905593990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3778040448).

2905593990 is an abundant number, since it is smaller than the sum of its proper divisors (4650486906).

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

2905593990 is a wasteful number, since it uses less digits than its factorization.

2905593990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45893.

The product of its (nonzero) digits is 984150, while the sum is 51.

The square root of 2905593990 is about 53903.5619416751. The cubic root of 2905593990 is about 1426.9594859137.

The spelling of 2905593990 in words is "two billion, nine hundred five million, five hundred ninety-three thousand, nine hundred ninety".