2179589989 has 2 divisors, whose sum is σ = 2179589990. Its totient is φ = 2179589988.

The previous prime is 2179589983. The next prime is 2179590001. The reversal of 2179589989 is 9899859712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2166157764 + 13432225 = 46542^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 2179589989 - 2¹⁷ = 2179458917 is a prime.

It is a super-2 number, since 2×2179589989² = 9501225040298040242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2179589983) 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, 1089794994 + 1089794995.

It is an arithmetic number, because the mean of its divisors is an integer number (1089794995).

Almost surely, 2^2179589989 is an apocalyptic number.

It is an amenable number.

2179589989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179589989 is an equidigital number, since it uses as much as digits as its factorization.

2179589989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 67.

The square root of 2179589989 is about 46686.0791778449. The cubic root of 2179589989 is about 1296.5569619770.

The spelling of 2179589989 in words is "two billion, one hundred seventy-nine million, five hundred eighty-nine thousand, nine hundred eighty-nine".