1131939 has 12 divisors (see below), whose sum is σ = 1646736. Its totient is φ = 749232.

The previous prime is 1131937. The next prime is 1131943. The reversal of 1131939 is 9391311.

It is not a de Polignac number, because 1131939 - 2¹ = 1131937 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131937) 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, 1194 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (137228).

2^1131939 is an apocalyptic number.

1131939 is a deficient number, since it is larger than the sum of its proper divisors (514797).

1131939 is a wasteful number, since it uses less digits than its factorization.

1131939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 903 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 1131939 is about 1063.9262192464. The cubic root of 1131939 is about 104.2175856301.

The spelling of 1131939 in words is "one million, one hundred thirty-one thousand, nine hundred thirty-nine".