144459381 has 8 divisors (see below), whose sum is σ = 210122784. Its totient is φ = 87551120.

The previous prime is 144459379. The next prime is 144459401. The reversal of 144459381 is 183954441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144459381 - 2¹ = 144459379 is a prime.

It is a super-2 number, since 2×144459381² = 41737025517806322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144459361) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2188746 + ... + 2188811.

It is an arithmetic number, because the mean of its divisors is an integer number (26265348).

Almost surely, 2^144459381 is an apocalyptic number.

144459381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144459381 is a deficient number, since it is larger than the sum of its proper divisors (65663403).

144459381 is a wasteful number, since it uses less digits than its factorization.

144459381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377571.

The product of its digits is 69120, while the sum is 39.

The square root of 144459381 is about 12019.1256337556. The cubic root of 144459381 is about 524.7050570089.

The spelling of 144459381 in words is "one hundred forty-four million, four hundred fifty-nine thousand, three hundred eighty-one".