1179000989 has 2 divisors, whose sum is σ = 1179000990. Its totient is φ = 1179000988.

The previous prime is 1179000971. The next prime is 1179000997. The reversal of 1179000989 is 9890009711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879122500 + 299878489 = 29650^2 + 17317^2 .

It is a cyclic number.

It is not a de Polignac number, because 1179000989 - 2⁸ = 1179000733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1179000289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589500494 + 589500495.

It is an arithmetic number, because the mean of its divisors is an integer number (589500495).

Almost surely, 2^1179000989 is an apocalyptic number.

It is an amenable number.

1179000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1179000989 is an equidigital number, since it uses as much as digits as its factorization.

1179000989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 1179000989 is about 34336.5838283310. The cubic root of 1179000989 is about 1056.4235073021.

The spelling of 1179000989 in words is "one billion, one hundred seventy-nine million, nine hundred eighty-nine", and thus it is an aban number.