404043401 has 2 divisors, whose sum is σ = 404043402. Its totient is φ = 404043400.

The previous prime is 404043391. The next prime is 404043407. The reversal of 404043401 is 104340404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277255801 + 126787600 = 16651^2 + 11260^2 .

It is a cyclic number.

It is not a de Polignac number, because 404043401 - 2¹⁰ = 404042377 is a prime.

It is not a weakly prime, because it can be changed into another prime (404043407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202021700 + 202021701.

It is an arithmetic number, because the mean of its divisors is an integer number (202021701).

Almost surely, 2^404043401 is an apocalyptic number.

It is an amenable number.

404043401 is a deficient number, since it is larger than the sum of its proper divisors (1).

404043401 is an equidigital number, since it uses as much as digits as its factorization.

404043401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404043401 is about 20100.8308534747. The cubic root of 404043401 is about 739.2806504765.

Adding to 404043401 its reverse (104340404), we get a palindrome (508383805).

The spelling of 404043401 in words is "four hundred four million, forty-three thousand, four hundred one".