144244403 has 4 divisors (see below), whose sum is σ = 147598968. Its totient is φ = 140889840.

The previous prime is 144244379. The next prime is 144244469. The reversal of 144244403 is 304442441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304442441 = 53 ⋅5744197.

It is a cyclic number.

It is not a de Polignac number, because 144244403 - 2²⁰ = 143195827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144244003) 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, 1677218 + ... + 1677303.

It is an arithmetic number, because the mean of its divisors is an integer number (36899742).

Almost surely, 2^144244403 is an apocalyptic number.

144244403 is a deficient number, since it is larger than the sum of its proper divisors (3354565).

144244403 is an equidigital number, since it uses as much as digits as its factorization.

144244403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354564.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 144244403 is about 12010.1791410453. The cubic root of 144244403 is about 524.4446469109. Note that the first 3 decimals are identical.

Adding to 144244403 its reverse (304442441), we get a palindrome (448686844).

The spelling of 144244403 in words is "one hundred forty-four million, two hundred forty-four thousand, four hundred three".