144743409 has 32 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 93739536.

The previous prime is 144743323. The next prime is 144743411. The reversal of 144743409 is 904347441.

It is not a de Polignac number, because 144743409 - 2⁸ = 144743153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144743449) 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 31 ways as a sum of consecutive naturals, for example, 211582 + ... + 212264.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^144743409 is an apocalyptic number.

It is an amenable number.

144743409 is a deficient number, since it is larger than the sum of its proper divisors (75887631).

144743409 is a wasteful number, since it uses less digits than its factorization.

144743409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 144743409 is about 12030.9354997855. The cubic root of 144743409 is about 525.0487138471.

The spelling of 144743409 in words is "one hundred forty-four million, seven hundred forty-three thousand, four hundred nine".