149915 has 4 divisors (see below), whose sum is σ = 179904. Its totient is φ = 119928.

The previous prime is 149911. The next prime is 149921. The reversal of 149915 is 519941.

149915 is nontrivially palindromic in base 14.

149915 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 an emirpimes, since its reverse is a distinct semiprime: 519941 = 29 ⋅17929.

It is a cyclic number.

It is not a de Polignac number, because 149915 - 2² = 149911 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (149911) 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, 14987 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (44976).

2¹⁴⁹⁹¹⁵ is an apocalyptic number.

149915 is a deficient number, since it is larger than the sum of its proper divisors (29989).

149915 is an equidigital number, since it uses as much as digits as its factorization.

149915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29988.

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

The square root of 149915 is about 387.1885845425. The cubic root of 149915 is about 53.1228903430.

The spelling of 149915 in words is "one hundred forty-nine thousand, nine hundred fifteen".