144339986 has 12 divisors (see below), whose sum is σ = 251858718. Its totient is φ = 61859952.

The previous prime is 144339983. The next prime is 144340003. The reversal of 144339986 is 689933441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 144120025 + 219961 = 12005^2 + 469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144339986.

It is not an unprimeable number, because it can be changed into a prime (144339983) 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 in 5 ways as a sum of consecutive naturals, for example, 736331 + ... + 736526.

Almost surely, 2^144339986 is an apocalyptic number.

144339986 is a deficient number, since it is larger than the sum of its proper divisors (107518732).

144339986 is a wasteful number, since it uses less digits than its factorization.

144339986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472873 (or 1472866 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 144339986 is about 12014.1577316098. The cubic root of 144339986 is about 524.5604617440.

The spelling of 144339986 in words is "one hundred forty-four million, three hundred thirty-nine thousand, nine hundred eighty-six".