89631229 has 2 divisors, whose sum is σ = 89631230. Its totient is φ = 89631228.

The previous prime is 89631203. The next prime is 89631233. The reversal of 89631229 is 92213698.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 17347225 = 8502^2 + 4165^2 .

It is a cyclic number.

It is not a de Polignac number, because 89631229 - 2²¹ = 87534077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89631191 and 89631200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89631239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44815614 + 44815615.

It is an arithmetic number, because the mean of its divisors is an integer number (44815615).

Almost surely, 2^89631229 is an apocalyptic number.

It is an amenable number.

89631229 is a deficient number, since it is larger than the sum of its proper divisors (1).

89631229 is an equidigital number, since it uses as much as digits as its factorization.

89631229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 89631229 is about 9467.3770918877. The cubic root of 89631229 is about 447.5275582001.

The spelling of 89631229 in words is "eighty-nine million, six hundred thirty-one thousand, two hundred twenty-nine".