404630461 has 4 divisors (see below), whose sum is σ = 412265052. Its totient is φ = 396995872.

The previous prime is 404630431. The next prime is 404630477. The reversal of 404630461 is 164036404.

It is a happy number.

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 271227961 + 133402500 = 16469^2 + 11550^2 .

It is a cyclic number.

It is not a de Polignac number, because 404630461 - 2⁷ = 404630333 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 (404630411) 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, 3817216 + ... + 3817321.

It is an arithmetic number, because the mean of its divisors is an integer number (103066263).

Almost surely, 2^404630461 is an apocalyptic number.

It is an amenable number.

404630461 is a deficient number, since it is larger than the sum of its proper divisors (7634591).

404630461 is an equidigital number, since it uses as much as digits as its factorization.

404630461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634590.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 404630461 is about 20115.4284319276. The cubic root of 404630461 is about 739.6385262812.

Adding to 404630461 its reverse (164036404), we get a palindrome (568666865).

The spelling of 404630461 in words is "four hundred four million, six hundred thirty thousand, four hundred sixty-one".