149599 has 4 divisors (see below), whose sum is σ = 150520. Its totient is φ = 148680.

The previous prime is 149579. The next prime is 149603. The reversal of 149599 is 995941.

149599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 149599 - 2⁹ = 149087 is a prime.

It is a Duffinian number.

149599 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149519) 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, 144 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (37630).

2¹⁴⁹⁵⁹⁹ is an apocalyptic number.

149599 is a deficient number, since it is larger than the sum of its proper divisors (921).

149599 is an equidigital number, since it uses as much as digits as its factorization.

149599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 14580, while the sum is 37.

The square root of 149599 is about 386.7802993949. The cubic root of 149599 is about 53.0855388617.

The spelling of 149599 in words is "one hundred forty-nine thousand, five hundred ninety-nine".