404407684 has 6 divisors (see below), whose sum is σ = 707713454. Its totient is φ = 202203840.

The previous prime is 404407667. The next prime is 404407687. The reversal of 404407684 is 486704404.

It can be written as a sum of positive squares in only one way, i.e., 328334400 + 76073284 = 18120^2 + 8722^2 .

It is not an unprimeable number, because it can be changed into a prime (404407687) 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, 50550957 + ... + 50550964.

Almost surely, 2^404407684 is an apocalyptic number.

It is an amenable number.

404407684 is a deficient number, since it is larger than the sum of its proper divisors (303305770).

404407684 is a wasteful number, since it uses less digits than its factorization.

404407684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101101925 (or 101101923 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 404407684 is about 20109.8902035789. The cubic root of 404407684 is about 739.5027606737.

The spelling of 404407684 in words is "four hundred four million, four hundred seven thousand, six hundred eighty-four".