144484457 has 4 divisors (see below), whose sum is σ = 155598660. Its totient is φ = 133370256.

The previous prime is 144484441. The next prime is 144484481. The reversal of 144484457 is 754484441.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90079081 + 54405376 = 9491^2 + 7376^2 .

It is a cyclic number.

It is not a de Polignac number, because 144484457 - 2⁴ = 144484441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144484427) 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, 5557082 + ... + 5557107.

It is an arithmetic number, because the mean of its divisors is an integer number (38899665).

Almost surely, 2^144484457 is an apocalyptic number.

It is an amenable number.

144484457 is a deficient number, since it is larger than the sum of its proper divisors (11114203).

144484457 is a wasteful number, since it uses less digits than its factorization.

144484457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114202.

The product of its digits is 286720, while the sum is 41.

The square root of 144484457 is about 12020.1687592147. The cubic root of 144484457 is about 524.7354155837.

The spelling of 144484457 in words is "one hundred forty-four million, four hundred eighty-four thousand, four hundred fifty-seven".