1139266 has 12 divisors (see below), whose sum is σ = 1748646. Its totient is φ = 556640.

The previous prime is 1139263. The next prime is 1139269. The reversal of 1139266 is 6629311.

It is an interprime number because it is at equal distance from previous prime (1139263) and next prime (1139269).

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 5041 = 1065^2 + 71^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139263) 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 5 ways as a sum of consecutive naturals, for example, 10026 + ... + 10138.

2^1139266 is an apocalyptic number.

1139266 is a deficient number, since it is larger than the sum of its proper divisors (609380).

1139266 is an equidigital number, since it uses as much as digits as its factorization.

1139266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 186 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 1139266 is about 1067.3640428645. The cubic root of 1139266 is about 104.4419677330.

The spelling of 1139266 in words is "one million, one hundred thirty-nine thousand, two hundred sixty-six".