1299255827 has 4 divisors (see below), whose sum is σ = 1326899616. Its totient is φ = 1271612040.

The previous prime is 1299255817. The next prime is 1299255857. The reversal of 1299255827 is 7285529921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1299255827 - 2¹² = 1299251731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299255817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13821824 + ... + 13821917.

It is an arithmetic number, because the mean of its divisors is an integer number (331724904).

Almost surely, 2^1299255827 is an apocalyptic number.

1299255827 is a deficient number, since it is larger than the sum of its proper divisors (27643789).

1299255827 is an equidigital number, since it uses as much as digits as its factorization.

1299255827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27643788.

The product of its digits is 907200, while the sum is 50.

The square root of 1299255827 is about 36045.1914546171. The cubic root of 1299255827 is about 1091.1845907172.

The spelling of 1299255827 in words is "one billion, two hundred ninety-nine million, two hundred fifty-five thousand, eight hundred twenty-seven".