149549 has 8 divisors (see below), whose sum is σ = 167040. Its totient is φ = 133056.

The previous prime is 149543. The next prime is 149551. The reversal of 149549 is 945941.

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

It is a cyclic number.

It is not a de Polignac number, because 149549 - 2⁴ = 149533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92 + ... + 554.

It is an arithmetic number, because the mean of its divisors is an integer number (20880).

2¹⁴⁹⁵⁴⁹ is an apocalyptic number.

149549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

149549 is a deficient number, since it is larger than the sum of its proper divisors (17491).

149549 is a wasteful number, since it uses less digits than its factorization.

149549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its digits is 6480, while the sum is 32.

The square root of 149549 is about 386.7156578159. The cubic root of 149549 is about 53.0796239988.

The spelling of 149549 in words is "one hundred forty-nine thousand, five hundred forty-nine".