144417857 has 2 divisors, whose sum is σ = 144417858. Its totient is φ = 144417856.

The previous prime is 144417853. The next prime is 144417869. The reversal of 144417857 is 758714441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107827456 + 36590401 = 10384^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 144417857 - 2² = 144417853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144417853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72208928 + 72208929.

It is an arithmetic number, because the mean of its divisors is an integer number (72208929).

Almost surely, 2^144417857 is an apocalyptic number.

It is an amenable number.

144417857 is a deficient number, since it is larger than the sum of its proper divisors (1).

144417857 is an equidigital number, since it uses as much as digits as its factorization.

144417857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125440, while the sum is 41.

The square root of 144417857 is about 12017.3980960938. The cubic root of 144417857 is about 524.6547777296.

The spelling of 144417857 in words is "one hundred forty-four million, four hundred seventeen thousand, eight hundred fifty-seven".