322440421 has 4 divisors (see below), whose sum is σ = 325398700. Its totient is φ = 319482144.

The previous prime is 322440403. The next prime is 322440439. The reversal of 322440421 is 124044223.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (322440403) and next prime (322440439).

It can be written as a sum of positive squares in 2 ways, for example, as 276390625 + 46049796 = 16625^2 + 6786^2 .

It is a cyclic number.

It is not a de Polignac number, because 322440421 - 2⁵ = 322440389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322440392 and 322440401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322440401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478976 + ... + 1479193.

It is an arithmetic number, because the mean of its divisors is an integer number (81349675).

Almost surely, 2^322440421 is an apocalyptic number.

It is an amenable number.

322440421 is a deficient number, since it is larger than the sum of its proper divisors (2958279).

322440421 is a wasteful number, since it uses less digits than its factorization.

322440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958278.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 322440421 is about 17956.6261029181. The cubic root of 322440421 is about 685.7247526573.

Adding to 322440421 its reverse (124044223), we get a palindrome (446484644).

The spelling of 322440421 in words is "three hundred twenty-two million, four hundred forty thousand, four hundred twenty-one".