144431447 has 4 divisors (see below), whose sum is σ = 144980880. Its totient is φ = 143882016.

The previous prime is 144431437. The next prime is 144431477. The reversal of 144431447 is 744134441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744134441 = 829 ⋅897629.

It is a cyclic number.

It is not a de Polignac number, because 144431447 - 2¹² = 144427351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144431437) 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, 274322 + ... + 274847.

It is an arithmetic number, because the mean of its divisors is an integer number (36245220).

Almost surely, 2^144431447 is an apocalyptic number.

144431447 is a deficient number, since it is larger than the sum of its proper divisors (549433).

144431447 is an equidigital number, since it uses as much as digits as its factorization.

144431447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549432.

The product of its digits is 21504, while the sum is 32.

The square root of 144431447 is about 12017.9635130083. The cubic root of 144431447 is about 524.6712342236.

Adding to 144431447 its reverse (744134441), we get a palindrome (888565888).

The spelling of 144431447 in words is "one hundred forty-four million, four hundred thirty-one thousand, four hundred forty-seven".