144322399 has 4 divisors (see below), whose sum is σ = 155424136. Its totient is φ = 133220664.

The previous prime is 144322393. The next prime is 144322427. The reversal of 144322399 is 993223441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144322399 - 2⁹ = 144321887 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 (144322393) 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, 5550849 + ... + 5550874.

It is an arithmetic number, because the mean of its divisors is an integer number (38856034).

Almost surely, 2^144322399 is an apocalyptic number.

144322399 is a deficient number, since it is larger than the sum of its proper divisors (11101737).

144322399 is a wasteful number, since it uses less digits than its factorization.

144322399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101736.

The product of its digits is 46656, while the sum is 37.

The square root of 144322399 is about 12013.4257811833. The cubic root of 144322399 is about 524.5391559834.

The spelling of 144322399 in words is "one hundred forty-four million, three hundred twenty-two thousand, three hundred ninety-nine".