1139969 has 4 divisors (see below), whose sum is σ = 1207044. Its totient is φ = 1072896.

The previous prime is 1139959. The next prime is 1139989. The reversal of 1139969 is 9699311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 169744 = 985^2 + 412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139969 - 2⁸ = 1139713 is a prime.

It is a super-2 number, since 2×1139969² = 2599058641922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33512 + ... + 33545.

It is an arithmetic number, because the mean of its divisors is an integer number (301761).

2^1139969 is an apocalyptic number.

It is an amenable number.

1139969 is a deficient number, since it is larger than the sum of its proper divisors (67075).

1139969 is an equidigital number, since it uses as much as digits as its factorization.

1139969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67074.

The product of its digits is 13122, while the sum is 38.

The square root of 1139969 is about 1067.6933080244. The cubic root of 1139969 is about 104.4634457742.

The spelling of 1139969 in words is "one million, one hundred thirty-nine thousand, nine hundred sixty-nine".