149291 has 4 divisors (see below), whose sum is σ = 150072. Its totient is φ = 148512.

The previous prime is 149287. The next prime is 149297. The reversal of 149291 is 192941.

149291 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 149291 - 2² = 149287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149291.

It is not an unprimeable number, because it can be changed into a prime (149297) 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, 116 + ... + 558.

It is an arithmetic number, because the mean of its divisors is an integer number (37518).

2¹⁴⁹²⁹¹ is an apocalyptic number.

149291 is a deficient number, since it is larger than the sum of its proper divisors (781).

149291 is an equidigital number, since it uses as much as digits as its factorization.

149291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780.

The product of its digits is 648, while the sum is 26.

The square root of 149291 is about 386.3819353955. The cubic root of 149291 is about 53.0490823352.

The spelling of 149291 in words is "one hundred forty-nine thousand, two hundred ninety-one".