2169340399 has 2 divisors, whose sum is σ = 2169340400. Its totient is φ = 2169340398.

The previous prime is 2169340391. The next prime is 2169340421. The reversal of 2169340399 is 9930439612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2169340399 - 2³ = 2169340391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2169340391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084670199 + 1084670200.

It is an arithmetic number, because the mean of its divisors is an integer number (1084670200).

Almost surely, 2^2169340399 is an apocalyptic number.

2169340399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169340399 is an equidigital number, since it uses as much as digits as its factorization.

2169340399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 2169340399 is about 46576.1784499330. The cubic root of 2169340399 is about 1294.5214013356.

The spelling of 2169340399 in words is "two billion, one hundred sixty-nine million, three hundred forty thousand, three hundred ninety-nine".