89472217 has 2 divisors, whose sum is σ = 89472218. Its totient is φ = 89472216.

The previous prime is 89472211. The next prime is 89472307. The reversal of 89472217 is 71227498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79762761 + 9709456 = 8931^2 + 3116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89472217 is a prime.

It is a super-2 number, since 2×89472217² = 16010555229790178, 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 89472217.

It is not a weakly prime, because it can be changed into another prime (89472211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44736108 + 44736109.

It is an arithmetic number, because the mean of its divisors is an integer number (44736109).

Almost surely, 2^89472217 is an apocalyptic number.

It is an amenable number.

89472217 is a deficient number, since it is larger than the sum of its proper divisors (1).

89472217 is an equidigital number, since it uses as much as digits as its factorization.

89472217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 89472217 is about 9458.9754730626. The cubic root of 89472217 is about 447.2627532630.

The spelling of 89472217 in words is "eighty-nine million, four hundred seventy-two thousand, two hundred seventeen".