404234432389 has 2 divisors, whose sum is σ = 404234432390. Its totient is φ = 404234432388.

The previous prime is 404234432377. The next prime is 404234432423. The reversal of 404234432389 is 983234432404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404209850625 + 24581764 = 635775^2 + 4958^2 .

It is a cyclic number.

It is not a de Polignac number, because 404234432389 - 2³³ = 395644497797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404234432309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202117216194 + 202117216195.

It is an arithmetic number, because the mean of its divisors is an integer number (202117216195).

Almost surely, 2^404234432389 is an apocalyptic number.

It is an amenable number.

404234432389 is a deficient number, since it is larger than the sum of its proper divisors (1).

404234432389 is an equidigital number, since it uses as much as digits as its factorization.

404234432389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 404234432389 in words is "four hundred four billion, two hundred thirty-four million, four hundred thirty-two thousand, three hundred eighty-nine".