1306972799 has 8 divisors (see below), whose sum is σ = 1435232640. Its totient is φ = 1180287000.

The previous prime is 1306972789. The next prime is 1306972853. The reversal of 1306972799 is 9972796031.

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 1306972799 - 2²⁰ = 1305924223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1306972799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306972759) 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, 391769 + ... + 395090.

It is an arithmetic number, because the mean of its divisors is an integer number (179404080).

Almost surely, 2^1306972799 is an apocalyptic number.

1306972799 is a deficient number, since it is larger than the sum of its proper divisors (128259841).

1306972799 is a wasteful number, since it uses less digits than its factorization.

1306972799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787021.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The square root of 1306972799 is about 36152.0787645745. The cubic root of 1306972799 is about 1093.3407029566.

The spelling of 1306972799 in words is "one billion, three hundred six million, nine hundred seventy-two thousand, seven hundred ninety-nine".