404646404 has 6 divisors (see below), whose sum is σ = 708131214. Its totient is φ = 202323200.

The previous prime is 404646391. The next prime is 404646409.

404646404 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 234396100 + 170250304 = 15310^2 + 13048^2 .

It is not an unprimeable number, because it can be changed into a prime (404646409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50580797 + ... + 50580804.

It is an arithmetic number, because the mean of its divisors is an integer number (118021869).

Almost surely, 2^404646404 is an apocalyptic number.

It is an amenable number.

404646404 is a deficient number, since it is larger than the sum of its proper divisors (303484810).

404646404 is a wasteful number, since it uses less digits than its factorization.

404646404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101161605 (or 101161603 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 404646404 is about 20115.8247158798. The cubic root of 404646404 is about 739.6482404141.

The spelling of 404646404 in words is "four hundred four million, six hundred forty-six thousand, four hundred four".