144674639 has 4 divisors (see below), whose sum is σ = 144700200. Its totient is φ = 144649080.

The previous prime is 144674617. The next prime is 144674653. The reversal of 144674639 is 936476441.

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 144674639 - 2¹² = 144670543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144674639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144674839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 17010.

It is an arithmetic number, because the mean of its divisors is an integer number (36175050).

Almost surely, 2^144674639 is an apocalyptic number.

144674639 is a deficient number, since it is larger than the sum of its proper divisors (25561).

144674639 is an equidigital number, since it uses as much as digits as its factorization.

144674639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560.

The product of its digits is 435456, while the sum is 44.

The square root of 144674639 is about 12028.0771114921. The cubic root of 144674639 is about 524.9655475502.

The spelling of 144674639 in words is "one hundred forty-four million, six hundred seventy-four thousand, six hundred thirty-nine".