144443985 has 64 divisors (see below), whose sum is σ = 294451200. Its totient is φ = 58862592.

The previous prime is 144443953. The next prime is 144443993. The reversal of 144443985 is 589344441.

It is not a de Polignac number, because 144443985 - 2⁵ = 144443953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31786 + ... + 36044.

It is an arithmetic number, because the mean of its divisors is an integer number (4600800).

Almost surely, 2^144443985 is an apocalyptic number.

144443985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144443985 is an abundant number, since it is smaller than the sum of its proper divisors (150007215).

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

144443985 is a wasteful number, since it uses less digits than its factorization.

144443985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310.

The product of its digits is 276480, while the sum is 42.

The square root of 144443985 is about 12018.4851374872. The cubic root of 144443985 is about 524.6864159072.

The spelling of 144443985 in words is "one hundred forty-four million, four hundred forty-three thousand, nine hundred eighty-five".