406189506 has 16 divisors (see below), whose sum is σ = 814260384. Its totient is φ = 135082944.

The previous prime is 406189477. The next prime is 406189513. The reversal of 406189506 is 605981604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75576 + ... + 80771.

It is an arithmetic number, because the mean of its divisors is an integer number (50891274).

Almost surely, 2^406189506 is an apocalyptic number.

406189506 is an abundant number, since it is smaller than the sum of its proper divisors (408070878).

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

406189506 is a wasteful number, since it uses less digits than its factorization.

406189506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156785.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 406189506 is about 20154.1436434298. The cubic root of 406189506 is about 740.5872535873.

The spelling of 406189506 in words is "four hundred six million, one hundred eighty-nine thousand, five hundred six".