1167489989 has 4 divisors (see below), whose sum is σ = 1189518156. Its totient is φ = 1145461824.

The previous prime is 1167489931. The next prime is 1167490019. The reversal of 1167489989 is 9899847611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9899847611 = 23 ⋅430428157.

It can be written as a sum of positive squares in 2 ways, for example, as 385336900 + 782153089 = 19630^2 + 27967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1167489989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167482989) 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 in 3 ways as a sum of consecutive naturals, for example, 11014004 + ... + 11014109.

It is an arithmetic number, because the mean of its divisors is an integer number (297379539).

Almost surely, 2^1167489989 is an apocalyptic number.

It is an amenable number.

1167489989 is a deficient number, since it is larger than the sum of its proper divisors (22028167).

1167489989 is an equidigital number, since it uses as much as digits as its factorization.

1167489989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22028166.

The product of its digits is 7838208, while the sum is 62.

The square root of 1167489989 is about 34168.5526325011. The cubic root of 1167489989 is about 1052.9741794706.

The spelling of 1167489989 in words is "one billion, one hundred sixty-seven million, four hundred eighty-nine thousand, nine hundred eighty-nine".