404434664 has 8 divisors (see below), whose sum is σ = 758315010. Its totient is φ = 202217328.

The previous prime is 404434661. The next prime is 404434687. The reversal of 404434664 is 466434404.

It can be written as a sum of positive squares in only one way, i.e., 374732164 + 29702500 = 19358^2 + 5450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (404434661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277159 + ... + 25277174.

Almost surely, 2^404434664 is an apocalyptic number.

It is an amenable number.

404434664 is a deficient number, since it is larger than the sum of its proper divisors (353880346).

404434664 is a wasteful number, since it uses less digits than its factorization.

404434664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50554339 (or 50554335 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

The square root of 404434664 is about 20110.5610065955. The cubic root of 404434664 is about 739.5192055811.

The spelling of 404434664 in words is "four hundred four million, four hundred thirty-four thousand, six hundred sixty-four".