1268939 has 4 divisors (see below), whose sum is σ = 1450224. Its totient is φ = 1087656.

The previous prime is 1268929. The next prime is 1268947. The reversal of 1268939 is 9398621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9398621 = 97 ⋅96893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1268939 is a prime.

It is a super-2 number, since 2×1268939² = 3220412371442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90632 + ... + 90645.

It is an arithmetic number, because the mean of its divisors is an integer number (362556).

2^1268939 is an apocalyptic number.

1268939 is a deficient number, since it is larger than the sum of its proper divisors (181285).

1268939 is an equidigital number, since it uses as much as digits as its factorization.

1268939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181284.

The product of its digits is 23328, while the sum is 38.

The square root of 1268939 is about 1126.4719259706. The cubic root of 1268939 is about 108.2630476373.

The spelling of 1268939 in words is "one million, two hundred sixty-eight thousand, nine hundred thirty-nine".