1147239 has 12 divisors (see below), whose sum is σ = 1744600. Its totient is φ = 724464.

The previous prime is 1147231. The next prime is 1147243. The reversal of 1147239 is 9327411.

It is not a de Polignac number, because 1147239 - 2³ = 1147231 is a prime.

It is a Duffinian number.

1147239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3184 + ... + 3525.

2^1147239 is an apocalyptic number.

1147239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1147239 is a deficient number, since it is larger than the sum of its proper divisors (597361).

1147239 is a wasteful number, since it uses less digits than its factorization.

1147239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734 (or 6731 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1147239 is about 1071.0924329861. The cubic root of 1147239 is about 104.6850425947.

It can be divided in two parts, 11472 and 39, that added together give a palindrome (11511).

The spelling of 1147239 in words is "one million, one hundred forty-seven thousand, two hundred thirty-nine".