2173342399 has 2 divisors, whose sum is σ = 2173342400. Its totient is φ = 2173342398.

The previous prime is 2173342397. The next prime is 2173342439. The reversal of 2173342399 is 9932433712.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2173342399 - 2¹ = 2173342397 is a prime.

Together with 2173342397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173342397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086671199 + 1086671200.

It is an arithmetic number, because the mean of its divisors is an integer number (1086671200).

Almost surely, 2^2173342399 is an apocalyptic number.

2173342399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173342399 is an equidigital number, since it uses as much as digits as its factorization.

2173342399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 2173342399 is about 46619.1205301001. The cubic root of 2173342399 is about 1295.3169568481.

The spelling of 2173342399 in words is "two billion, one hundred seventy-three million, three hundred forty-two thousand, three hundred ninety-nine".