1299287 has 8 divisors (see below), whose sum is σ = 1466640. Its totient is φ = 1140160.

The previous prime is 1299283. The next prime is 1299289. The reversal of 1299287 is 7829921.

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 1299287 - 2² = 1299283 is a prime.

It is an Ulam number.

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 1299287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299283) 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 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 2355.

It is an arithmetic number, because the mean of its divisors is an integer number (183330).

2^1299287 is an apocalyptic number.

1299287 is a deficient number, since it is larger than the sum of its proper divisors (167353).

1299287 is a wasteful number, since it uses less digits than its factorization.

1299287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113.

The product of its digits is 18144, while the sum is 38.

The square root of 1299287 is about 1139.8627110315. The cubic root of 1299287 is about 109.1193317565.

It can be divided in two parts, 12 and 99287, that added together give a palindrome (99299).

The spelling of 1299287 in words is "one million, two hundred ninety-nine thousand, two hundred eighty-seven".