89388791 has 2 divisors, whose sum is σ = 89388792. Its totient is φ = 89388790.

The previous prime is 89388773. The next prime is 89388797. The reversal of 89388791 is 19788398.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89388791 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89388797) 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, 44694395 + 44694396.

It is an arithmetic number, because the mean of its divisors is an integer number (44694396).

Almost surely, 2^89388791 is an apocalyptic number.

89388791 is a deficient number, since it is larger than the sum of its proper divisors (1).

89388791 is an equidigital number, since it uses as much as digits as its factorization.

89388791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 53.

The square root of 89388791 is about 9454.5645589842. The cubic root of 89388791 is about 447.1236972633.

The spelling of 89388791 in words is "eighty-nine million, three hundred eighty-eight thousand, seven hundred ninety-one".