89946047 has 2 divisors, whose sum is σ = 89946048. Its totient is φ = 89946046.

The previous prime is 89946007. The next prime is 89946049. The reversal of 89946047 is 74064998.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89946047 is a prime.

Together with 89946049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 89945992 and 89946010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89946049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44973023 + 44973024.

It is an arithmetic number, because the mean of its divisors is an integer number (44973024).

Almost surely, 2^89946047 is an apocalyptic number.

89946047 is a deficient number, since it is larger than the sum of its proper divisors (1).

89946047 is an equidigital number, since it uses as much as digits as its factorization.

89946047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 89946047 is about 9483.9889814360. The cubic root of 89946047 is about 448.0509066700.

The spelling of 89946047 in words is "eighty-nine million, nine hundred forty-six thousand, forty-seven".