89098749 has 6 divisors (see below), whose sum is σ = 128698206. Its totient is φ = 59399160.

The previous prime is 89098739. The next prime is 89098753. The reversal of 89098749 is 94789098.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 79524 = 9435^2 + 282^2 .

It is not a de Polignac number, because 89098749 - 2⁷ = 89098621 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 89098695 and 89098704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89098739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4949922 + ... + 4949939.

It is an arithmetic number, because the mean of its divisors is an integer number (21449701).

Almost surely, 2^89098749 is an apocalyptic number.

It is an amenable number.

89098749 is a deficient number, since it is larger than the sum of its proper divisors (39599457).

89098749 is a wasteful number, since it uses less digits than its factorization.

89098749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9899867 (or 9899864 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 89098749 is about 9439.2133676488. The cubic root of 89098749 is about 446.6395755332.

The spelling of 89098749 in words is "eighty-nine million, ninety-eight thousand, seven hundred forty-nine".