2289994391 has 2 divisors, whose sum is σ = 2289994392. Its totient is φ = 2289994390.

The previous prime is 2289994349. The next prime is 2289994393. The reversal of 2289994391 is 1934999822.

2289994391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2289994391 - 2¹⁴ = 2289978007 is a prime.

It is a super-2 number, since 2×2289994391² = 10488148621622921762, which contains 22 as substring.

Together with 2289994393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2289994393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144997195 + 1144997196.

It is an arithmetic number, because the mean of its divisors is an integer number (1144997196).

Almost surely, 2^2289994391 is an apocalyptic number.

2289994391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289994391 is an equidigital number, since it uses as much as digits as its factorization.

2289994391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 56.

The square root of 2289994391 is about 47853.8858505764. The cubic root of 2289994391 is about 1318.0892140359.

The spelling of 2289994391 in words is "two billion, two hundred eighty-nine million, nine hundred ninety-four thousand, three hundred ninety-one".