89148821 has 2 divisors, whose sum is σ = 89148822. Its totient is φ = 89148820.

The previous prime is 89148797. The next prime is 89148827. The reversal of 89148821 is 12884198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 23716900 = 8089^2 + 4870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89148821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89148827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44574410 + 44574411.

It is an arithmetic number, because the mean of its divisors is an integer number (44574411).

Almost surely, 2^89148821 is an apocalyptic number.

It is an amenable number.

89148821 is a deficient number, since it is larger than the sum of its proper divisors (1).

89148821 is an equidigital number, since it uses as much as digits as its factorization.

89148821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 41.

The square root of 89148821 is about 9441.8653347736. The cubic root of 89148821 is about 446.7232278439.

The spelling of 89148821 in words is "eighty-nine million, one hundred forty-eight thousand, eight hundred twenty-one".