149591 has 8 divisors (see below), whose sum is σ = 165984. Its totient is φ = 133920.

The previous prime is 149579. The next prime is 149603. The reversal of 149591 is 195941.

It is an interprime number because it is at equal distance from previous prime (149579) and next prime (149603).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149521) 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, 326 + ... + 636.

It is an arithmetic number, because the mean of its divisors is an integer number (20748).

2¹⁴⁹⁵⁹¹ is an apocalyptic number.

149591 is a deficient number, since it is larger than the sum of its proper divisors (16393).

149591 is a wasteful number, since it uses less digits than its factorization.

149591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its digits is 1620, while the sum is 29.

The square root of 149591 is about 386.7699574683. The cubic root of 149591 is about 53.0845925722.

The spelling of 149591 in words is "one hundred forty-nine thousand, five hundred ninety-one".