89447219 has 2 divisors, whose sum is σ = 89447220. Its totient is φ = 89447218.

The previous prime is 89447209. The next prime is 89447249. The reversal of 89447219 is 91274498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89447219 - 2⁸ = 89446963 is a prime.

It is a super-2 number, since 2×89447219² = 16001609973667922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89447219.

It is not a weakly prime, because it can be changed into another prime (89447209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44723609 + 44723610.

It is an arithmetic number, because the mean of its divisors is an integer number (44723610).

Almost surely, 2^89447219 is an apocalyptic number.

89447219 is a deficient number, since it is larger than the sum of its proper divisors (1).

89447219 is an equidigital number, since it uses as much as digits as its factorization.

89447219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 89447219 is about 9457.6539902874. The cubic root of 89447219 is about 447.2210952075.

The spelling of 89447219 in words is "eighty-nine million, four hundred forty-seven thousand, two hundred nineteen".