144474459 has 8 divisors (see below), whose sum is σ = 192832512. Its totient is φ = 96216360.

The previous prime is 144474437. The next prime is 144474479. The reversal of 144474459 is 954474441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144474459 - 2⁹ = 144473947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144474459.

It is not an unprimeable number, because it can be changed into a prime (144474479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21547 + ... + 27444.

It is an arithmetic number, because the mean of its divisors is an integer number (24104064).

Almost surely, 2^144474459 is an apocalyptic number.

144474459 is a deficient number, since it is larger than the sum of its proper divisors (48358053).

144474459 is an equidigital number, since it uses as much as digits as its factorization.

144474459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49977.

The product of its digits is 322560, while the sum is 42.

The square root of 144474459 is about 12019.7528676758. The cubic root of 144474459 is about 524.7233118004.

Adding to 144474459 its sum of digits (42), we get a triangular number (144474501 = T₁₆₉₉₈).

The spelling of 144474459 in words is "one hundred forty-four million, four hundred seventy-four thousand, four hundred fifty-nine".