144429491 has 2 divisors, whose sum is σ = 144429492. Its totient is φ = 144429490.

The previous prime is 144429487. The next prime is 144429503. The reversal of 144429491 is 194924441.

It is a weak prime.

It is an emirp because it is prime and its reverse (194924441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144429491 - 2² = 144429487 is a prime.

It is not a weakly prime, because it can be changed into another prime (144429401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72214745 + 72214746.

It is an arithmetic number, because the mean of its divisors is an integer number (72214746).

Almost surely, 2^144429491 is an apocalyptic number.

144429491 is a deficient number, since it is larger than the sum of its proper divisors (1).

144429491 is an equidigital number, since it uses as much as digits as its factorization.

144429491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 144429491 is about 12017.8821345527. The cubic root of 144429491 is about 524.6688657145.

The spelling of 144429491 in words is "one hundred forty-four million, four hundred twenty-nine thousand, four hundred ninety-one".