1129939 has 4 divisors (see below), whose sum is σ = 1196424. Its totient is φ = 1063456.

The previous prime is 1129897. The next prime is 1129951. The reversal of 1129939 is 9399211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9399211 = 1559 ⋅6029.

It is a cyclic number.

It is not a de Polignac number, because 1129939 - 2¹¹ = 1127891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129439) 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, 33217 + ... + 33250.

It is an arithmetic number, because the mean of its divisors is an integer number (299106).

2^1129939 is an apocalyptic number.

1129939 is a deficient number, since it is larger than the sum of its proper divisors (66485).

1129939 is an equidigital number, since it uses as much as digits as its factorization.

1129939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66484.

The product of its digits is 4374, while the sum is 34.

The square root of 1129939 is about 1062.9858888998. The cubic root of 1129939 is about 104.1561694666.

The spelling of 1129939 in words is "one million, one hundred twenty-nine thousand, nine hundred thirty-nine".