2291998392 has 96 divisors (see below), whose sum is σ = 6686484480. Its totient is φ = 707192640.

The previous prime is 2291998391. The next prime is 2291998393. The reversal of 2291998392 is 2938991922.

It is an interprime number because it is at equal distance from previous prime (2291998391) and next prime (2291998393).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291998391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29013 + ... + 73659.

It is an arithmetic number, because the mean of its divisors is an integer number (69650880).

Almost surely, 2^2291998392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291998392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3343242240).

2291998392 is an abundant number, since it is smaller than the sum of its proper divisors (4394486088).

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

2291998392 is a wasteful number, since it uses less digits than its factorization.

2291998392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44713 (or 44706 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 2291998392 is about 47874.8200205494. The cubic root of 2291998392 is about 1318.4735937191.

The spelling of 2291998392 in words is "two billion, two hundred ninety-one million, nine hundred ninety-eight thousand, three hundred ninety-two".