144421911 has 12 divisors (see below), whose sum is σ = 212145960. Its totient is φ = 94649040.

The previous prime is 144421903. The next prime is 144421913. The reversal of 144421911 is 119124441.

144421911 is a `hidden beast` number, since 1 + 444 + 219 + 1 + 1 = 666.

144421911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144421911 - 2³ = 144421903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144421913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135460 + ... + 136521.

It is an arithmetic number, because the mean of its divisors is an integer number (17678830).

Almost surely, 2^144421911 is an apocalyptic number.

144421911 is a deficient number, since it is larger than the sum of its proper divisors (67724049).

144421911 is a wasteful number, since it uses less digits than its factorization.

144421911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272046 (or 272043 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 144421911 is about 12017.5667670290. The cubic root of 144421911 is about 524.6596869345.

The spelling of 144421911 in words is "one hundred forty-four million, four hundred twenty-one thousand, nine hundred eleven".