109258989 has 32 divisors (see below), whose sum is σ = 170459136. Its totient is φ = 60963840.

The previous prime is 109258951. The next prime is 109259009. The reversal of 109258989 is 989852901.

It is not a de Polignac number, because 109258989 - 2⁷ = 109258861 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109258939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189069 + ... + 189645.

It is an arithmetic number, because the mean of its divisors is an integer number (5326848).

Almost surely, 2^109258989 is an apocalyptic number.

It is an amenable number.

109258989 is a deficient number, since it is larger than the sum of its proper divisors (61200147).

109258989 is a wasteful number, since it uses less digits than its factorization.

109258989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 466560, while the sum is 51.

The square root of 109258989 is about 10452.7024735233. The cubic root of 109258989 is about 478.0636531655.

The spelling of 109258989 in words is "one hundred nine million, two hundred fifty-eight thousand, nine hundred eighty-nine".