144408287 has 4 divisors (see below), whose sum is σ = 146236320. Its totient is φ = 142580256.

The previous prime is 144408281. The next prime is 144408293. The reversal of 144408287 is 782804441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (144408281) and next prime (144408293).

It is a cyclic number.

It is not a de Polignac number, because 144408287 - 2⁸ = 144408031 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 144408287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144408281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913898 + ... + 914055.

It is an arithmetic number, because the mean of its divisors is an integer number (36559080).

Almost surely, 2^144408287 is an apocalyptic number.

144408287 is a deficient number, since it is larger than the sum of its proper divisors (1828033).

144408287 is an equidigital number, since it uses as much as digits as its factorization.

144408287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828032.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 144408287 is about 12016.9999167846. Note that the first 4 decimals coincide. The cubic root of 144408287 is about 524.6431885415.

The spelling of 144408287 in words is "one hundred forty-four million, four hundred eight thousand, two hundred eighty-seven".