1268899 has 2 divisors, whose sum is σ = 1268900. Its totient is φ = 1268898.

The previous prime is 1268881. The next prime is 1268921. The reversal of 1268899 is 9988621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1268899 - 2⁵ = 1268867 is a prime.

It is a super-2 number, since 2×1268899² = 3220209344402, which contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1268849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634449 + 634450.

It is an arithmetic number, because the mean of its divisors is an integer number (634450).

2^1268899 is an apocalyptic number.

1268899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268899 is an equidigital number, since it uses as much as digits as its factorization.

1268899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 1268899 is about 1126.4541712826. The cubic root of 1268899 is about 108.2619100550.

It can be divided in two parts, 126 and 8899, that added together give a square (9025 = 95²).

The spelling of 1268899 in words is "one million, two hundred sixty-eight thousand, eight hundred ninety-nine".