1128939 has 8 divisors (see below), whose sum is σ = 1720320. Its totient is φ = 645096.

The previous prime is 1128937. The next prime is 1128943. The reversal of 1128939 is 9398211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128939 - 2¹ = 1128937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1128931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26859 + ... + 26900.

It is an arithmetic number, because the mean of its divisors is an integer number (215040).

2^1128939 is an apocalyptic number.

1128939 is a deficient number, since it is larger than the sum of its proper divisors (591381).

1128939 is an equidigital number, since it uses as much as digits as its factorization.

1128939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53769.

The product of its digits is 3888, while the sum is 33.

The square root of 1128939 is about 1062.5154116529. The cubic root of 1128939 is about 104.1254342055.

The spelling of 1128939 in words is "one million, one hundred twenty-eight thousand, nine hundred thirty-nine".