144464399 has 4 divisors (see below), whose sum is σ = 149445960. Its totient is φ = 139482840.

The previous prime is 144464393. The next prime is 144464407. The reversal of 144464399 is 993464441.

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

It is a cyclic number.

It is not a de Polignac number, because 144464399 - 2⁸ = 144464143 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 (144464393) 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, 2490737 + ... + 2490794.

It is an arithmetic number, because the mean of its divisors is an integer number (37361490).

Almost surely, 2^144464399 is an apocalyptic number.

144464399 is a deficient number, since it is larger than the sum of its proper divisors (4981561).

144464399 is an equidigital number, since it uses as much as digits as its factorization.

144464399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981560.

The product of its digits is 373248, while the sum is 44.

The square root of 144464399 is about 12019.3343825688. The cubic root of 144464399 is about 524.7111323949.

The spelling of 144464399 in words is "one hundred forty-four million, four hundred sixty-four thousand, three hundred ninety-nine".