1140230989 has 2 divisors, whose sum is σ = 1140230990. Its totient is φ = 1140230988.

The previous prime is 1140230981. The next prime is 1140231031. The reversal of 1140230989 is 9890320411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869365225 + 270865764 = 29485^2 + 16458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140230989 - 2³ = 1140230981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140230981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570115494 + 570115495.

It is an arithmetic number, because the mean of its divisors is an integer number (570115495).

Almost surely, 2^1140230989 is an apocalyptic number.

It is an amenable number.

1140230989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140230989 is an equidigital number, since it uses as much as digits as its factorization.

1140230989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1140230989 is about 33767.3065108842. The cubic root of 1140230989 is about 1044.7144779803.

The spelling of 1140230989 in words is "one billion, one hundred forty million, two hundred thirty thousand, nine hundred eighty-nine".