149597 has 12 divisors (see below), whose sum is σ = 180576. Its totient is φ = 123480.

The previous prime is 149579. The next prime is 149603. The reversal of 149597 is 795941.

It is not a de Polignac number, because 149597 - 2⁶ = 149533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2072 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (15048).

2¹⁴⁹⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

149597 is a deficient number, since it is larger than the sum of its proper divisors (30979).

149597 is an equidigital number, since it uses as much as digits as its factorization.

149597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 121 counting only the distinct ones).

The product of its digits is 11340, while the sum is 35.

The square root of 149597 is about 386.7777139392. Note that the first 4 decimals coincide. The cubic root of 149597 is about 53.0853022925.

The spelling of 149597 in words is "one hundred forty-nine thousand, five hundred ninety-seven".