149539 has 4 divisors (see below), whose sum is σ = 161056. Its totient is φ = 138024.

The previous prime is 149533. The next prime is 149543. The reversal of 149539 is 935941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935941 = 829 ⋅1129.

It is a cyclic number.

It is not a de Polignac number, because 149539 - 2³ = 149531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149539.

It is not an unprimeable number, because it can be changed into a prime (149531) 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, 5739 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (40264).

2¹⁴⁹⁵³⁹ is an apocalyptic number.

149539 is a deficient number, since it is larger than the sum of its proper divisors (11517).

149539 is a wasteful number, since it uses less digits than its factorization.

149539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516.

The product of its digits is 4860, while the sum is 31.

The square root of 149539 is about 386.7027282035. The cubic root of 149539 is about 53.0784408681.

The spelling of 149539 in words is "one hundred forty-nine thousand, five hundred thirty-nine".