89988449 has 2 divisors, whose sum is σ = 89988450. Its totient is φ = 89988448.

The previous prime is 89988433. The next prime is 89988467. The reversal of 89988449 is 94488998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69422224 + 20566225 = 8332^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 89988449 - 2⁴ = 89988433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89988419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44994224 + 44994225.

It is an arithmetic number, because the mean of its divisors is an integer number (44994225).

Almost surely, 2^89988449 is an apocalyptic number.

It is an amenable number.

89988449 is a deficient number, since it is larger than the sum of its proper divisors (1).

89988449 is an equidigital number, since it uses as much as digits as its factorization.

89988449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 59.

The square root of 89988449 is about 9486.2241698159. The cubic root of 89988449 is about 448.1213017220.

The spelling of 89988449 in words is "eighty-nine million, nine hundred eighty-eight thousand, four hundred forty-nine".