406447506 has 48 divisors (see below), whose sum is σ = 928699200. Its totient is φ = 128114784.

The previous prime is 406447501. The next prime is 406447529. The reversal of 406447506 is 605744604.

406447506 is a `hidden beast` number, since 4 + 0 + 644 + 7 + 5 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (406447501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330100 + ... + 331328.

It is an arithmetic number, because the mean of its divisors is an integer number (19347900).

Almost surely, 2^406447506 is an apocalyptic number.

406447506 is an abundant number, since it is smaller than the sum of its proper divisors (522251694).

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

406447506 is a wasteful number, since it uses less digits than its factorization.

406447506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 406447506 is about 20160.5432962507. The cubic root of 406447506 is about 740.7440203743.

The spelling of 406447506 in words is "four hundred six million, four hundred forty-seven thousand, five hundred six".