144449139 has 8 divisors (see below), whose sum is σ = 192654592. Its totient is φ = 96271560.

The previous prime is 144449117. The next prime is 144449141. The reversal of 144449139 is 931944441.

144449139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 144449139 - 2⁹ = 144448627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144449097 and 144449106.

It is not an unprimeable number, because it can be changed into a prime (144449839) 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, 15234 + ... + 22824.

It is an arithmetic number, because the mean of its divisors is an integer number (24081824).

Almost surely, 2^144449139 is an apocalyptic number.

144449139 is a deficient number, since it is larger than the sum of its proper divisors (48205453).

144449139 is an equidigital number, since it uses as much as digits as its factorization.

144449139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13937.

The product of its digits is 62208, while the sum is 39.

The square root of 144449139 is about 12018.6995552764. The cubic root of 144449139 is about 524.6926563923.

The spelling of 144449139 in words is "one hundred forty-four million, four hundred forty-nine thousand, one hundred thirty-nine".