144276889 has 4 divisors (see below), whose sum is σ = 146722320. Its totient is φ = 141831460.

The previous prime is 144276871. The next prime is 144276901. The reversal of 144276889 is 988672441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988672441 = 53 ⋅18654197.

It is a cyclic number.

It is not a de Polignac number, because 144276889 - 2⁷ = 144276761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144276829) 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, 1222627 + ... + 1222744.

It is an arithmetic number, because the mean of its divisors is an integer number (36680580).

Almost surely, 2^144276889 is an apocalyptic number.

It is an amenable number.

144276889 is a deficient number, since it is larger than the sum of its proper divisors (2445431).

144276889 is an equidigital number, since it uses as much as digits as its factorization.

144276889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445430.

The product of its digits is 774144, while the sum is 49.

The square root of 144276889 is about 12011.5315010202. The cubic root of 144276889 is about 524.4840148854.

It can be divided in two parts, 14427 and 6889, that added together give a square (21316 = 146²).

The spelling of 144276889 in words is "one hundred forty-four million, two hundred seventy-six thousand, eight hundred eighty-nine".