1299252797 has 8 divisors (see below), whose sum is σ = 1306429440. Its totient is φ = 1292089680.

The previous prime is 1299252767. The next prime is 1299252841. The reversal of 1299252797 is 7972529921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1299252797 - 2²⁸ = 1030817341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299252707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233348 + ... + 238850.

It is an arithmetic number, because the mean of its divisors is an integer number (163303680).

Almost surely, 2^1299252797 is an apocalyptic number.

It is an amenable number.

1299252797 is a deficient number, since it is larger than the sum of its proper divisors (7176643).

1299252797 is a wasteful number, since it uses less digits than its factorization.

1299252797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763.

The product of its digits is 1428840, while the sum is 53.

The square root of 1299252797 is about 36045.1494240210. The cubic root of 1299252797 is about 1091.1837424645.

The spelling of 1299252797 in words is "one billion, two hundred ninety-nine million, two hundred fifty-two thousand, seven hundred ninety-seven".