89128811 has 2 divisors, whose sum is σ = 89128812. Its totient is φ = 89128810.

The previous prime is 89128801. The next prime is 89128817. The reversal of 89128811 is 11882198.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89128811 - 2¹⁴ = 89112427 is a prime.

It is not a weakly prime, because it can be changed into another prime (89128817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44564405 + 44564406.

It is an arithmetic number, because the mean of its divisors is an integer number (44564406).

Almost surely, 2^89128811 is an apocalyptic number.

89128811 is a deficient number, since it is larger than the sum of its proper divisors (1).

89128811 is an equidigital number, since it uses as much as digits as its factorization.

89128811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 38.

The square root of 89128811 is about 9440.8056329955. The cubic root of 89128811 is about 446.6898020862.

The spelling of 89128811 in words is "eighty-nine million, one hundred twenty-eight thousand, eight hundred eleven".