109499 has 4 divisors (see below), whose sum is σ = 117936. Its totient is φ = 101064.

The previous prime is 109481. The next prime is 109507. The reversal of 109499 is 994901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109499 - 2¹⁶ = 43963 is a prime.

It is an Ulam number.

It is a plaindrome in base 15 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4199 + ... + 4224.

It is an arithmetic number, because the mean of its divisors is an integer number (29484).

2¹⁰⁹⁴⁹⁹ is an apocalyptic number.

109499 is a deficient number, since it is larger than the sum of its proper divisors (8437).

109499 is an equidigital number, since it uses as much as digits as its factorization.

109499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 109499 is about 330.9063311573. The cubic root of 109499 is about 47.8413453889.

The spelling of 109499 in words is "one hundred nine thousand, four hundred ninety-nine".