89516447 has 2 divisors, whose sum is σ = 89516448. Its totient is φ = 89516446.

The previous prime is 89516443. The next prime is 89516491. The reversal of 89516447 is 74461598.

It is an a-pointer prime, because the next prime (89516491) can be obtained adding 89516447 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89516447 - 2² = 89516443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89516398 and 89516407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89516443) 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, 44758223 + 44758224.

It is an arithmetic number, because the mean of its divisors is an integer number (44758224).

Almost surely, 2^89516447 is an apocalyptic number.

89516447 is a deficient number, since it is larger than the sum of its proper divisors (1).

89516447 is an equidigital number, since it uses as much as digits as its factorization.

89516447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 89516447 is about 9461.3131752416. The cubic root of 89516447 is about 447.3364415854.

The spelling of 89516447 in words is "eighty-nine million, five hundred sixteen thousand, four hundred forty-seven".