89744109 has 32 divisors (see below), whose sum is σ = 148834560. Its totient is φ = 46835712.

The previous prime is 89744107. The next prime is 89744117. The reversal of 89744109 is 90144798.

It is not a de Polignac number, because 89744109 - 2¹ = 89744107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89744107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24787 + ... + 28175.

It is an arithmetic number, because the mean of its divisors is an integer number (4651080).

Almost surely, 2^89744109 is an apocalyptic number.

It is an amenable number.

89744109 is a deficient number, since it is larger than the sum of its proper divisors (59090451).

89744109 is a wasteful number, since it uses less digits than its factorization.

89744109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 89744109 is about 9473.3367405577. The cubic root of 89744109 is about 447.7153488450.

Subtracting 89744109 from its reverse (90144798), we obtain a square (400689 = 633²).

The spelling of 89744109 in words is "eighty-nine million, seven hundred forty-four thousand, one hundred nine".