404234432309 has 2 divisors, whose sum is σ = 404234432310. Its totient is φ = 404234432308.

The previous prime is 404234432291. The next prime is 404234432377. The reversal of 404234432309 is 903234432404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387294628900 + 16939803409 = 622330^2 + 130153^2 .

It is a cyclic number.

It is not a de Polignac number, because 404234432309 - 2²⁸ = 403965996853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404234432389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202117216154 + 202117216155.

It is an arithmetic number, because the mean of its divisors is an integer number (202117216155).

Almost surely, 2^404234432309 is an apocalyptic number.

It is an amenable number.

404234432309 is a deficient number, since it is larger than the sum of its proper divisors (1).

404234432309 is an equidigital number, since it uses as much as digits as its factorization.

404234432309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 404234432309 in words is "four hundred four billion, two hundred thirty-four million, four hundred thirty-two thousand, three hundred nine".