109866249 has 12 divisors (see below), whose sum is σ = 158833012. Its totient is φ = 73180800.

The previous prime is 109866217. The next prime is 109866277. The reversal of 109866249 is 942668901.

It is a happy number.

109866249 is a `hidden beast` number, since 10 + 9 + 8 + 6 + 624 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105945849 + 3920400 = 10293^2 + 1980^2 .

It is not a de Polignac number, because 109866249 - 2⁵ = 109866217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109866349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7269 + ... + 16509.

Almost surely, 2^109866249 is an apocalyptic number.

It is an amenable number.

109866249 is a deficient number, since it is larger than the sum of its proper divisors (48966763).

109866249 is a wasteful number, since it uses less digits than its factorization.

109866249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10568 (or 10565 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 109866249 is about 10481.7102135100. The cubic root of 109866249 is about 478.9477077923.

The spelling of 109866249 in words is "one hundred nine million, eight hundred sixty-six thousand, two hundred forty-nine".