404971841 has 4 divisors (see below), whose sum is σ = 428793732. Its totient is φ = 381149952.

The previous prime is 404971829. The next prime is 404971849. The reversal of 404971841 is 148179404.

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 329785600 + 75186241 = 18160^2 + 8671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404971841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404971795 and 404971804.

It is not an unprimeable number, because it can be changed into a prime (404971849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11910920 + ... + 11910953.

It is an arithmetic number, because the mean of its divisors is an integer number (107198433).

Almost surely, 2^404971841 is an apocalyptic number.

It is an amenable number.

404971841 is a deficient number, since it is larger than the sum of its proper divisors (23821891).

404971841 is a wasteful number, since it uses less digits than its factorization.

404971841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23821890.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 404971841 is about 20123.9121693571. The cubic root of 404971841 is about 739.8464747250.

The spelling of 404971841 in words is "four hundred four million, nine hundred seventy-one thousand, eight hundred forty-one".