1322438399 has 8 divisors (see below), whose sum is σ = 1392435840. Its totient is φ = 1252480536.

The previous prime is 1322438387. The next prime is 1322438401. The reversal of 1322438399 is 9938342231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1322438399 - 2¹² = 1322434303 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 (1322438329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79484 + ... + 94670.

It is an arithmetic number, because the mean of its divisors is an integer number (174054480).

Almost surely, 2^1322438399 is an apocalyptic number.

1322438399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1322438399 is a deficient number, since it is larger than the sum of its proper divisors (69997441).

1322438399 is a wasteful number, since it uses less digits than its factorization.

1322438399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789.

The product of its digits is 279936, while the sum is 44.

The square root of 1322438399 is about 36365.3461278729. The cubic root of 1322438399 is about 1097.6363569524.

The spelling of 1322438399 in words is "one billion, three hundred twenty-two million, four hundred thirty-eight thousand, three hundred ninety-nine".