144974449 has 2 divisors, whose sum is σ = 144974450. Its totient is φ = 144974448.

The previous prime is 144974447. The next prime is 144974477. The reversal of 144974449 is 944479441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 5143824 = 11825^2 + 2268^2 .

It is a cyclic number.

It is not a de Polignac number, because 144974449 - 2¹ = 144974447 is a prime.

Together with 144974447, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 144974399 and 144974408.

It is not a weakly prime, because it can be changed into another prime (144974443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72487224 + 72487225.

It is an arithmetic number, because the mean of its divisors is an integer number (72487225).

Almost surely, 2^144974449 is an apocalyptic number.

It is an amenable number.

144974449 is a deficient number, since it is larger than the sum of its proper divisors (1).

144974449 is an equidigital number, since it uses as much as digits as its factorization.

144974449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The square root of 144974449 is about 12040.5335845219. The cubic root of 144974449 is about 525.3279269483.

The spelling of 144974449 in words is "one hundred forty-four million, nine hundred seventy-four thousand, four hundred forty-nine".