144680917 has 2 divisors, whose sum is σ = 144680918. Its totient is φ = 144680916.

The previous prime is 144680911. The next prime is 144680941. The reversal of 144680917 is 719086441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122080401 + 22600516 = 11049^2 + 4754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144680917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144680917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144680911) 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 as a sum of consecutive naturals, namely, 72340458 + 72340459.

It is an arithmetic number, because the mean of its divisors is an integer number (72340459).

Almost surely, 2^144680917 is an apocalyptic number.

It is an amenable number.

144680917 is a deficient number, since it is larger than the sum of its proper divisors (1).

144680917 is an equidigital number, since it uses as much as digits as its factorization.

144680917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 144680917 is about 12028.3380813810. The cubic root of 144680917 is about 524.9731408784.

The spelling of 144680917 in words is "one hundred forty-four million, six hundred eighty thousand, nine hundred seventeen".