2309400889 has 2 divisors, whose sum is σ = 2309400890. Its totient is φ = 2309400888.

The previous prime is 2309400839. The next prime is 2309400911. The reversal of 2309400889 is 9880049032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1919140864 + 390260025 = 43808^2 + 19755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2309400889 - 2²⁹ = 1772529977 is a prime.

It is a super-4 number, since 4×2309400889⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2309400839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154700444 + 1154700445.

It is an arithmetic number, because the mean of its divisors is an integer number (1154700445).

Almost surely, 2^2309400889 is an apocalyptic number.

It is an amenable number.

2309400889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309400889 is an equidigital number, since it uses as much as digits as its factorization.

2309400889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 2309400889 is about 48056.2263291657. The cubic root of 2309400889 is about 1321.8021163451.

The spelling of 2309400889 in words is "two billion, three hundred nine million, four hundred thousand, eight hundred eighty-nine".