321434424440989 has 2 divisors, whose sum is σ = 321434424440990. Its totient is φ = 321434424440988.

The previous prime is 321434424440929. The next prime is 321434424440999. The reversal of 321434424440989 is 989044424434123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266560153288900 + 54874271152089 = 16326670^2 + 7407717^2 .

It is a cyclic number.

It is not a de Polignac number, because 321434424440989 - 2³³ = 321425834506397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321434424440929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160717212220494 + 160717212220495.

It is an arithmetic number, because the mean of its divisors is an integer number (160717212220495).

Almost surely, 2^{321434424440989} is an apocalyptic number.

It is an amenable number.

321434424440989 is a deficient number, since it is larger than the sum of its proper divisors (1).

321434424440989 is an equidigital number, since it uses as much as digits as its factorization.

321434424440989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95551488, while the sum is 61.

The spelling of 321434424440989 in words is "three hundred twenty-one trillion, four hundred thirty-four billion, four hundred twenty-four million, four hundred forty thousand, nine hundred eighty-nine".