89390647 has 2 divisors, whose sum is σ = 89390648. Its totient is φ = 89390646.

The previous prime is 89390629. The next prime is 89390659. The reversal of 89390647 is 74609398.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89390647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89390597 and 89390606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89390677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44695323 + 44695324.

It is an arithmetic number, because the mean of its divisors is an integer number (44695324).

Almost surely, 2^89390647 is an apocalyptic number.

89390647 is a deficient number, since it is larger than the sum of its proper divisors (1).

89390647 is an equidigital number, since it uses as much as digits as its factorization.

89390647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 89390647 is about 9454.6627121225. The cubic root of 89390647 is about 447.1267918192.

The spelling of 89390647 in words is "eighty-nine million, three hundred ninety thousand, six hundred forty-seven".