321444434 has 4 divisors (see below), whose sum is σ = 482166654. Its totient is φ = 160722216.

The previous prime is 321444401. The next prime is 321444437. The reversal of 321444434 is 434444123.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 259113409 + 62331025 = 16097^2 + 7895^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321444397 and 321444406.

It is not an unprimeable number, because it can be changed into a prime (321444437) 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 as a sum of consecutive naturals, namely, 80361107 + ... + 80361110.

Almost surely, 2^321444434 is an apocalyptic number.

321444434 is a deficient number, since it is larger than the sum of its proper divisors (160722220).

321444434 is a wasteful number, since it uses less digits than its factorization.

321444434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160722219.

The product of its digits is 18432, while the sum is 29.

The square root of 321444434 is about 17928.8715205392. The cubic root of 321444434 is about 685.0179788202.

Adding to 321444434 its reverse (434444123), we get a palindrome (755888557).

The spelling of 321444434 in words is "three hundred twenty-one million, four hundred forty-four thousand, four hundred thirty-four".