1442442399 has 16 divisors (see below), whose sum is σ = 2025321600. Its totient is φ = 910637856.

The previous prime is 1442442383. The next prime is 1442442413. The reversal of 1442442399 is 9932442441.

It is not a de Polignac number, because 1442442399 - 2⁴ = 1442442383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1442442399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442442349) 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, 209392 + ... + 216170.

It is an arithmetic number, because the mean of its divisors is an integer number (126582600).

Almost surely, 2^1442442399 is an apocalyptic number.

1442442399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1442442399 is a deficient number, since it is larger than the sum of its proper divisors (582879201).

1442442399 is a wasteful number, since it uses less digits than its factorization.

1442442399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534.

The product of its digits is 248832, while the sum is 42.

The square root of 1442442399 is about 37979.4997202438. The cubic root of 1442442399 is about 1129.8813144462.

Adding to 1442442399 its sum of digits (42), we get a palindrome (1442442441).

The spelling of 1442442399 in words is "one billion, four hundred forty-two million, four hundred forty-two thousand, three hundred ninety-nine".