149109 has 8 divisors (see below), whose sum is σ = 207552. Its totient is φ = 95040.

The previous prime is 149101. The next prime is 149111. The reversal of 149109 is 901941.

149109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149109 - 2³ = 149101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (25944).

2¹⁴⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

149109 is a deficient number, since it is larger than the sum of its proper divisors (58443).

149109 is a wasteful number, since it uses less digits than its factorization.

149109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 149109 is about 386.1463453148. The cubic root of 149109 is about 53.0275162683.

Subtracting from 149109 its product of nonzero digits (324), we obtain a triangular number (148785 = T₅₄₅).

The spelling of 149109 in words is "one hundred forty-nine thousand, one hundred nine".