144969 has 16 divisors (see below), whose sum is σ = 221184. Its totient is φ = 83600.

The previous prime is 144967. The next prime is 144973. The reversal of 144969 is 969441.

It is not a de Polignac number, because 144969 - 2¹ = 144967 is a prime.

It is a super-2 number, since 2×144969² = 42032021922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

144969 is a lucky number.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (13824).

2¹⁴⁴⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

144969 is a deficient number, since it is larger than the sum of its proper divisors (76215).

144969 is a wasteful number, since it uses less digits than its factorization.

144969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its digits is 7776, while the sum is 33.

The square root of 144969 is about 380.7479481232. The cubic root of 144969 is about 52.5321345219.

The spelling of 144969 in words is "one hundred forty-four thousand, nine hundred sixty-nine".