1422821329 has 4 divisors (see below), whose sum is σ = 1424550976. Its totient is φ = 1421091684.

The previous prime is 1422821299. The next prime is 1422821333. The reversal of 1422821329 is 9231282241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9231282241 = 2381 ⋅3877061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422821329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1422821294 and 1422821303.

It is not an unprimeable number, because it can be changed into a prime (1422821399) 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, 863589 + ... + 865234.

It is an arithmetic number, because the mean of its divisors is an integer number (356137744).

Almost surely, 2^1422821329 is an apocalyptic number.

It is an amenable number.

1422821329 is a deficient number, since it is larger than the sum of its proper divisors (1729647).

1422821329 is an equidigital number, since it uses as much as digits as its factorization.

1422821329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729646.

The product of its digits is 13824, while the sum is 34.

The square root of 1422821329 is about 37720.3039356790. The cubic root of 1422821329 is about 1124.7347730971.

The spelling of 1422821329 in words is "one billion, four hundred twenty-two million, eight hundred twenty-one thousand, three hundred twenty-nine".