144448397 has 4 divisors (see below), whose sum is σ = 144686976. Its totient is φ = 144209820.

The previous prime is 144448387. The next prime is 144448463. The reversal of 144448397 is 793844441.

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.

It is a cyclic number.

It is not a de Polignac number, because 144448397 - 2⁸ = 144448141 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 (144448327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118379 + ... + 119592.

It is an arithmetic number, because the mean of its divisors is an integer number (36171744).

Almost surely, 2^144448397 is an apocalyptic number.

It is an amenable number.

144448397 is a deficient number, since it is larger than the sum of its proper divisors (238579).

144448397 is an equidigital number, since it uses as much as digits as its factorization.

144448397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238578.

The product of its digits is 387072, while the sum is 44.

The square root of 144448397 is about 12018.6686866724. The cubic root of 144448397 is about 524.6917579847.

The spelling of 144448397 in words is "one hundred forty-four million, four hundred forty-eight thousand, three hundred ninety-seven".