149593 has 4 divisors (see below), whose sum is σ = 150480. Its totient is φ = 148708.

The previous prime is 149579. The next prime is 149603. The reversal of 149593 is 395941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 149593 - 2⁵ = 149561 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149503) 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 3 ways as a sum of consecutive naturals, for example, 103 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (37620).

2¹⁴⁹⁵⁹³ is an apocalyptic number.

It is an amenable number.

149593 is a deficient number, since it is larger than the sum of its proper divisors (887).

149593 is an equidigital number, since it uses as much as digits as its factorization.

149593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886.

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

The square root of 149593 is about 386.7725429758. The cubic root of 149593 is about 53.0848291477.

It can be divided in two parts, 1 and 49593, that added together give a palindrome (49594).

The spelling of 149593 in words is "one hundred forty-nine thousand, five hundred ninety-three".