144717986 has 32 divisors (see below), whose sum is σ = 254900352. Its totient is φ = 60341760.

The previous prime is 144717977. The next prime is 144717997. The reversal of 144717986 is 689717441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 144717986.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81965 + ... + 83711.

It is an arithmetic number, because the mean of its divisors is an integer number (7965636).

Almost surely, 2^144717986 is an apocalyptic number.

144717986 is a deficient number, since it is larger than the sum of its proper divisors (110182366).

144717986 is a wasteful number, since it uses less digits than its factorization.

144717986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914.

The product of its digits is 338688, while the sum is 47.

The square root of 144717986 is about 12029.8788855084. The cubic root of 144717986 is about 525.0179718715.

The spelling of 144717986 in words is "one hundred forty-four million, seven hundred seventeen thousand, nine hundred eighty-six".