89238109 has 2 divisors, whose sum is σ = 89238110. Its totient is φ = 89238108.

The previous prime is 89238089. The next prime is 89238143. The reversal of 89238109 is 90183298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77528025 + 11710084 = 8805^2 + 3422^2 .

It is a cyclic number.

It is not a de Polignac number, because 89238109 - 2⁵ = 89238077 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89238169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44619054 + 44619055.

It is an arithmetic number, because the mean of its divisors is an integer number (44619055).

Almost surely, 2^89238109 is an apocalyptic number.

It is an amenable number.

89238109 is a deficient number, since it is larger than the sum of its proper divisors (1).

89238109 is an equidigital number, since it uses as much as digits as its factorization.

89238109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 89238109 is about 9446.5924544250. The cubic root of 89238109 is about 446.8723182978.

The spelling of 89238109 in words is "eighty-nine million, two hundred thirty-eight thousand, one hundred nine".