1130639 has 2 divisors, whose sum is σ = 1130640. Its totient is φ = 1130638.

The previous prime is 1130629. The next prime is 1130641. The reversal of 1130639 is 9360311.

It is a strong prime.

It is an emirp because it is prime and its reverse (9360311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130639 is a prime.

Together with 1130641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565319 + 565320.

It is an arithmetic number, because the mean of its divisors is an integer number (565320).

2^1130639 is an apocalyptic number.

1130639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130639 is an equidigital number, since it uses as much as digits as its factorization.

1130639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1130639 is about 1063.3150991122. The cubic root of 1130639 is about 104.1776733614.

The spelling of 1130639 in words is "one million, one hundred thirty thousand, six hundred thirty-nine".