404130644 has 12 divisors (see below), whose sum is σ = 708333024. Its totient is φ = 201749784.

The previous prime is 404130611. The next prime is 404130653. The reversal of 404130644 is 446031404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75992 + ... + 81135.

It is an arithmetic number, because the mean of its divisors is an integer number (59027752).

Almost surely, 2^404130644 is an apocalyptic number.

It is an amenable number.

404130644 is a deficient number, since it is larger than the sum of its proper divisors (304202380).

404130644 is a wasteful number, since it uses less digits than its factorization.

404130644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157774 (or 157772 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 404130644 is about 20103.0008705168. Note that the first 3 decimals coincide. The cubic root of 404130644 is about 739.3338563285. Note that the first 3 decimals are identical.

The spelling of 404130644 in words is "four hundred four million, one hundred thirty thousand, six hundred forty-four".