1130389 has 8 divisors (see below), whose sum is σ = 1232280. Its totient is φ = 1030656.

The previous prime is 1130369. The next prime is 1130407. The reversal of 1130389 is 9830311.

It can be written as a sum of positive squares in 4 ways, for example, as 96100 + 1034289 = 310^2 + 1017^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130389 is a prime.

It is a super-3 number, since 3×1130389³ = 4333162966011161607, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130359) 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, 669 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (154035).

2^1130389 is an apocalyptic number.

It is an amenable number.

1130389 is a deficient number, since it is larger than the sum of its proper divisors (101891).

1130389 is an equidigital number, since it uses as much as digits as its factorization.

1130389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1130389 is about 1063.1975357383. The cubic root of 1130389 is about 104.1699944181.

The spelling of 1130389 in words is "one million, one hundred thirty thousand, three hundred eighty-nine".