404466642 has 64 divisors (see below), whose sum is σ = 949248000. Its totient is φ = 127304784.

The previous prime is 404466619. The next prime is 404466709. The reversal of 404466642 is 246664404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404466597 and 404466606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491043 + ... + 491865.

It is an arithmetic number, because the mean of its divisors is an integer number (14832000).

Almost surely, 2^404466642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404466642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474624000).

404466642 is an abundant number, since it is smaller than the sum of its proper divisors (544781358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404466642 is a wasteful number, since it uses less digits than its factorization.

404466642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 404466642 is about 20111.3560457767. The cubic root of 404466642 is about 739.5386959331.

The spelling of 404466642 in words is "four hundred four million, four hundred sixty-six thousand, six hundred forty-two".