1149689 has 2 divisors, whose sum is σ = 1149690. Its totient is φ = 1149688.

The previous prime is 1149679. The next prime is 1149737. The reversal of 1149689 is 9869411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 354025 = 892^2 + 595^2 .

It is an emirp because it is prime and its reverse (9869411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149689 - 2¹² = 1145593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1149619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574844 + 574845.

It is an arithmetic number, because the mean of its divisors is an integer number (574845).

2^1149689 is an apocalyptic number.

It is an amenable number.

1149689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149689 is an equidigital number, since it uses as much as digits as its factorization.

1149689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 1149689 is about 1072.2355151738. The cubic root of 1149689 is about 104.7595100758.

The spelling of 1149689 in words is "one million, one hundred forty-nine thousand, six hundred eighty-nine".