144213399 has 16 divisors (see below), whose sum is σ = 233072640. Its totient is φ = 87401880.

The previous prime is 144213367. The next prime is 144213451. The reversal of 144213399 is 993312441.

It is not a de Polignac number, because 144213399 - 2⁵ = 144213367 is a prime.

It is a super-2 number, since 2×144213399² = 41595008902266402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144213299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242487 + ... + 243080.

It is an arithmetic number, because the mean of its divisors is an integer number (14567040).

Almost surely, 2^144213399 is an apocalyptic number.

144213399 is a deficient number, since it is larger than the sum of its proper divisors (88859241).

144213399 is a wasteful number, since it uses less digits than its factorization.

144213399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485587 (or 485581 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 144213399 is about 12008.8883332305. Note that the first 3 decimals coincide. The cubic root of 144213399 is about 524.4070693767.

It can be divided in two parts, 1442 and 13399, that added together give a palindrome (14841).

The spelling of 144213399 in words is "one hundred forty-four million, two hundred thirteen thousand, three hundred ninety-nine".