144243869 has 8 divisors (see below), whose sum is σ = 179836608. Its totient is φ = 112397760.

The previous prime is 144243851. The next prime is 144243881. The reversal of 144243869 is 968342441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144243869 is a prime.

It is a super-2 number, since 2×144243869² = 41612587488178322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144243829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936572 + ... + 936725.

It is an arithmetic number, because the mean of its divisors is an integer number (22479576).

Almost surely, 2^144243869 is an apocalyptic number.

It is an amenable number.

144243869 is a deficient number, since it is larger than the sum of its proper divisors (35592739).

144243869 is a wasteful number, since it uses less digits than its factorization.

144243869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873315.

The product of its digits is 165888, while the sum is 41.

The square root of 144243869 is about 12010.1569098826. The cubic root of 144243869 is about 524.4439997366.

The spelling of 144243869 in words is "one hundred forty-four million, two hundred forty-three thousand, eight hundred sixty-nine".