404424413 has 4 divisors (see below), whose sum is σ = 404841888. Its totient is φ = 404006940.

The previous prime is 404424403. The next prime is 404424421. The reversal of 404424413 is 314424404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404424413 - 2¹⁴ = 404408029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404424403) 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, 207281 + ... + 209222.

It is an arithmetic number, because the mean of its divisors is an integer number (101210472).

Almost surely, 2^404424413 is an apocalyptic number.

It is an amenable number.

404424413 is a deficient number, since it is larger than the sum of its proper divisors (417475).

404424413 is an equidigital number, since it uses as much as digits as its factorization.

404424413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417474.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 404424413 is about 20110.3061388931. The cubic root of 404424413 is about 739.5129574558.

Adding to 404424413 its reverse (314424404), we get a palindrome (718848817).

Subtracting from 404424413 its reverse (314424404), we obtain a palindrome (90000009).

The spelling of 404424413 in words is "four hundred four million, four hundred twenty-four thousand, four hundred thirteen".