2345400989 has 2 divisors, whose sum is σ = 2345400990. Its totient is φ = 2345400988.

The previous prime is 2345400973. The next prime is 2345400991. The reversal of 2345400989 is 9890045432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1671583225 + 673817764 = 40885^2 + 25958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2345400989 - 2⁴ = 2345400973 is a prime.

Together with 2345400991, 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 (2345400929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1172700494 + 1172700495.

It is an arithmetic number, because the mean of its divisors is an integer number (1172700495).

Almost surely, 2^2345400989 is an apocalyptic number.

It is an amenable number.

2345400989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2345400989 is an equidigital number, since it uses as much as digits as its factorization.

2345400989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2345400989 is about 48429.3401668864. The cubic root of 2345400989 is about 1328.6350382898.

The spelling of 2345400989 in words is "two billion, three hundred forty-five million, four hundred thousand, nine hundred eighty-nine".