404202444431 has 4 divisors (see below), whose sum is σ = 408126740112. Its totient is φ = 400278148752.

The previous prime is 404202444389. The next prime is 404202444439. The reversal of 404202444431 is 134444202404.

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

It is a cyclic number.

It is not a de Polignac number, because 404202444431 - 2¹⁸ = 404202182287 is a prime.

It is a super-2 number, since 2×404202444431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404202444439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1962147686 + ... + 1962147891.

It is an arithmetic number, because the mean of its divisors is an integer number (102031685028).

Almost surely, 2^404202444431 is an apocalyptic number.

404202444431 is a deficient number, since it is larger than the sum of its proper divisors (3924295681).

404202444431 is a wasteful number, since it uses less digits than its factorization.

404202444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924295680.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 404202444431 its reverse (134444202404), we get a palindrome (538646646835).

The spelling of 404202444431 in words is "four hundred four billion, two hundred two million, four hundred forty-four thousand, four hundred thirty-one".