1299308285 has 12 divisors (see below), whose sum is σ = 1713799164. Its totient is φ = 944951040.

The previous prime is 1299308281. The next prime is 1299308299. The reversal of 1299308285 is 5828039921.

It can be written as a sum of positive squares in 2 ways, for example, as 784336036 + 514972249 = 28006^2 + 22693^2 .

It is not a de Polignac number, because 1299308285 - 2² = 1299308281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299308281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1073204 + ... + 1074413.

It is an arithmetic number, because the mean of its divisors is an integer number (142816597).

Almost surely, 2^1299308285 is an apocalyptic number.

It is an amenable number.

1299308285 is a deficient number, since it is larger than the sum of its proper divisors (414490879).

1299308285 is a wasteful number, since it uses less digits than its factorization.

1299308285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147644 (or 2147633 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1299308285 is about 36045.9191171483. The cubic root of 1299308285 is about 1091.1992761984.

The spelling of 1299308285 in words is "one billion, two hundred ninety-nine million, three hundred eight thousand, two hundred eighty-five".