1299922499 has 2 divisors, whose sum is σ = 1299922500. Its totient is φ = 1299922498.

The previous prime is 1299922471. The next prime is 1299922501. The reversal of 1299922499 is 9942299921.

It is a strong prime.

It is an emirp because it is prime and its reverse (9942299921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299922499 - 2²⁰ = 1298873923 is a prime.

It is a Sophie Germain prime.

Together with 1299922501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1299922439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649961249 + 649961250.

It is an arithmetic number, because the mean of its divisors is an integer number (649961250).

Almost surely, 2^1299922499 is an apocalyptic number.

1299922499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299922499 is an equidigital number, since it uses as much as digits as its factorization.

1299922499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 56.

The square root of 1299922499 is about 36054.4379931237. The cubic root of 1299922499 is about 1091.3711944148.

The spelling of 1299922499 in words is "one billion, two hundred ninety-nine million, nine hundred twenty-two thousand, four hundred ninety-nine".