144339381 has 8 divisors (see below), whose sum is σ = 213836160. Its totient is φ = 96226236.

The previous prime is 144339361. The next prime is 144339383. The reversal of 144339381 is 183933441.

144339381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-144339381 is a prime.

It is a super-2 number, since 2×144339381² = 41667713814926322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144339383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2672925 + ... + 2672978.

It is an arithmetic number, because the mean of its divisors is an integer number (26729520).

Almost surely, 2^144339381 is an apocalyptic number.

It is an amenable number.

144339381 is a deficient number, since it is larger than the sum of its proper divisors (69496779).

144339381 is an equidigital number, since it uses as much as digits as its factorization.

144339381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345912 (or 5345906 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 144339381 is about 12014.1325529561. The cubic root of 144339381 is about 524.5597288458.

The spelling of 144339381 in words is "one hundred forty-four million, three hundred thirty-nine thousand, three hundred eighty-one".