144338893 has 4 divisors (see below), whose sum is σ = 144397440. Its totient is φ = 144280348.

The previous prime is 144338867. The next prime is 144338897. The reversal of 144338893 is 398833441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 398833441 = 137 ⋅2911193.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144338893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144338897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25405 + ... + 30562.

It is an arithmetic number, because the mean of its divisors is an integer number (36099360).

Almost surely, 2^144338893 is an apocalyptic number.

It is an amenable number.

144338893 is a deficient number, since it is larger than the sum of its proper divisors (58547).

144338893 is an equidigital number, since it uses as much as digits as its factorization.

144338893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58546.

The product of its digits is 248832, while the sum is 43.

The square root of 144338893 is about 12014.1122435243. The cubic root of 144338893 is about 524.5591376802.

The spelling of 144338893 in words is "one hundred forty-four million, three hundred thirty-eight thousand, eight hundred ninety-three".