144639337 has 2 divisors, whose sum is σ = 144639338. Its totient is φ = 144639336.

The previous prime is 144639307. The next prime is 144639367. The reversal of 144639337 is 733936441.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (144639307) and next prime (144639367).

It can be written as a sum of positive squares in only one way, i.e., 140754496 + 3884841 = 11864^2 + 1971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144639337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144639337.

It is not a weakly prime, because it can be changed into another prime (144639307) 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 as a sum of consecutive naturals, namely, 72319668 + 72319669.

It is an arithmetic number, because the mean of its divisors is an integer number (72319669).

Almost surely, 2^144639337 is an apocalyptic number.

It is an amenable number.

144639337 is a deficient number, since it is larger than the sum of its proper divisors (1).

144639337 is an equidigital number, since it uses as much as digits as its factorization.

144639337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 40.

The square root of 144639337 is about 12026.6095388518. The cubic root of 144639337 is about 524.9228451999.

The spelling of 144639337 in words is "one hundred forty-four million, six hundred thirty-nine thousand, three hundred thirty-seven".