144440867 has 2 divisors, whose sum is σ = 144440868. Its totient is φ = 144440866.

The previous prime is 144440861. The next prime is 144440903. The reversal of 144440867 is 768044441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144440867 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144440867.

It is not a weakly prime, because it can be changed into another prime (144440861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72220433 + 72220434.

It is an arithmetic number, because the mean of its divisors is an integer number (72220434).

Almost surely, 2^144440867 is an apocalyptic number.

144440867 is a deficient number, since it is larger than the sum of its proper divisors (1).

144440867 is an equidigital number, since it uses as much as digits as its factorization.

144440867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 144440867 is about 12018.3554199400. The cubic root of 144440867 is about 524.6826405474.

The spelling of 144440867 in words is "one hundred forty-four million, four hundred forty thousand, eight hundred sixty-seven".