144891 has 12 divisors (see below), whose sum is σ = 221832. Its totient is φ = 90816.

The previous prime is 144889. The next prime is 144899. The reversal of 144891 is 198441.

It is not a de Polignac number, because 144891 - 2¹ = 144889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144899) 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, 321 + ... + 626.

It is an arithmetic number, because the mean of its divisors is an integer number (18486).

2¹⁴⁴⁸⁹¹ is an apocalyptic number.

144891 is a deficient number, since it is larger than the sum of its proper divisors (76941).

144891 is a wasteful number, since it uses less digits than its factorization.

144891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 967 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 144891 is about 380.6455043738. The cubic root of 144891 is about 52.5227112622.

It can be divided in two parts, 144 and 891, that added together give a triangular number (1035 = T₄₅).

The spelling of 144891 in words is "one hundred forty-four thousand, eight hundred ninety-one".