144204409 has 2 divisors, whose sum is σ = 144204410. Its totient is φ = 144204408.

The previous prime is 144204397. The next prime is 144204439. The reversal of 144204409 is 904402441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 57714409 = 9300^2 + 7597^2 .

It is a cyclic number.

It is not a de Polignac number, because 144204409 - 2⁵ = 144204377 is a prime.

It is not a weakly prime, because it can be changed into another prime (144204439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72102204 + 72102205.

It is an arithmetic number, because the mean of its divisors is an integer number (72102205).

Almost surely, 2^144204409 is an apocalyptic number.

It is an amenable number.

144204409 is a deficient number, since it is larger than the sum of its proper divisors (1).

144204409 is an equidigital number, since it uses as much as digits as its factorization.

144204409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 144204409 is about 12008.5140213100. The cubic root of 144204409 is about 524.3961722905.

The spelling of 144204409 in words is "one hundred forty-four million, two hundred four thousand, four hundred nine".