144289213 has 4 divisors (see below), whose sum is σ = 144345600. Its totient is φ = 144232828.

The previous prime is 144289199. The next prime is 144289219. The reversal of 144289213 is 312982441.

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: 312982441 = 821 ⋅381221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144289213 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 (144289219) 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, 24163 + ... + 29536.

It is an arithmetic number, because the mean of its divisors is an integer number (36086400).

Almost surely, 2^144289213 is an apocalyptic number.

It is an amenable number.

144289213 is a deficient number, since it is larger than the sum of its proper divisors (56387).

144289213 is an equidigital number, since it uses as much as digits as its factorization.

144289213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56386.

The product of its digits is 13824, while the sum is 34.

The square root of 144289213 is about 12012.0444970871. The cubic root of 144289213 is about 524.4989481086.

The spelling of 144289213 in words is "one hundred forty-four million, two hundred eighty-nine thousand, two hundred thirteen".