144686911 has 2 divisors, whose sum is σ = 144686912. Its totient is φ = 144686910.

The previous prime is 144686903. The next prime is 144686921. The reversal of 144686911 is 119686441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144686911 - 2³ = 144686903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144686921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72343455 + 72343456.

It is an arithmetic number, because the mean of its divisors is an integer number (72343456).

Almost surely, 2^144686911 is an apocalyptic number.

144686911 is a deficient number, since it is larger than the sum of its proper divisors (1).

144686911 is an equidigital number, since it uses as much as digits as its factorization.

144686911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 144686911 is about 12028.5872404036. The cubic root of 144686911 is about 524.9803904996.

The spelling of 144686911 in words is "one hundred forty-four million, six hundred eighty-six thousand, nine hundred eleven".