423332403243989 has 2 divisors, whose sum is σ = 423332403243990. Its totient is φ = 423332403243988.

The previous prime is 423332403243979. The next prime is 423332403244133. The reversal of 423332403243989 is 989342304233324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400716120231025 + 22616283012964 = 20017895^2 + 4755658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423332403243989 is a prime.

It is a super-4 number, since 4×423332403243989⁴ (a number of 60 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423332403243929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211666201621994 + 211666201621995.

It is an arithmetic number, because the mean of its divisors is an integer number (211666201621995).

Almost surely, 2^{423332403243989} is an apocalyptic number.

It is an amenable number.

423332403243989 is a deficient number, since it is larger than the sum of its proper divisors (1).

423332403243989 is an equidigital number, since it uses as much as digits as its factorization.

423332403243989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80621568, while the sum is 59.

The spelling of 423332403243989 in words is "four hundred twenty-three trillion, three hundred thirty-two billion, four hundred three million, two hundred forty-three thousand, nine hundred eighty-nine".