404232635405 has 4 divisors (see below), whose sum is σ = 485079162492. Its totient is φ = 323386108320.

The previous prime is 404232635371. The next prime is 404232635449. The reversal of 404232635405 is 504536232404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 196272922729 + 207959712676 = 443027^2 + 456026^2 .

It is not a de Polignac number, because 404232635405 - 2¹⁰ = 404232634381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40423263536 + ... + 40423263545.

It is an arithmetic number, because the mean of its divisors is an integer number (121269790623).

Almost surely, 2^404232635405 is an apocalyptic number.

It is an amenable number.

404232635405 is a deficient number, since it is larger than the sum of its proper divisors (80846527087).

404232635405 is an equidigital number, since it uses as much as digits as its factorization.

404232635405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80846527086.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 404232635405 its reverse (504536232404), we get a palindrome (908768867809).

The spelling of 404232635405 in words is "four hundred four billion, two hundred thirty-two million, six hundred thirty-five thousand, four hundred five".