144013986 has 24 divisors (see below), whose sum is σ = 316427904. Its totient is φ = 47328120.

The previous prime is 144013979. The next prime is 144013997. The reversal of 144013986 is 689310441.

144013986 is a `hidden beast` number, since 1 + 440 + 139 + 86 = 666.

144013986 is a modest number, since divided by 13986 gives 144 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 144013986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55066 + ... + 57621.

It is an arithmetic number, because the mean of its divisors is an integer number (13184496).

Almost surely, 2^144013986 is an apocalyptic number.

144013986 is an abundant number, since it is smaller than the sum of its proper divisors (172413918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144013986 is a wasteful number, since it uses less digits than its factorization.

144013986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112766 (or 112763 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 144013986 is about 12000.5827358508. The cubic root of 144013986 is about 524.1652475930.

The spelling of 144013986 in words is "one hundred forty-four million, thirteen thousand, nine hundred eighty-six".