89472689 has 2 divisors, whose sum is σ = 89472690. Its totient is φ = 89472688.

The previous prime is 89472667. The next prime is 89472707. The reversal of 89472689 is 98627498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 25200400 = 8017^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 89472689 - 2²⁰ = 88424113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89472689.

It is not a weakly prime, because it can be changed into another prime (89475689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44736344 + 44736345.

It is an arithmetic number, because the mean of its divisors is an integer number (44736345).

Almost surely, 2^89472689 is an apocalyptic number.

It is an amenable number.

89472689 is a deficient number, since it is larger than the sum of its proper divisors (1).

89472689 is an equidigital number, since it uses as much as digits as its factorization.

89472689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 89472689 is about 9459.0004228777. Note that the first 3 decimals coincide. The cubic root of 89472689 is about 447.2635397554.

The spelling of 89472689 in words is "eighty-nine million, four hundred seventy-two thousand, six hundred eighty-nine".