406445688236 has 30 divisors (see below), whose sum is σ = 829777259220. Its totient is φ = 174191005128.

The previous prime is 406445688227. The next prime is 406445688277. The reversal of 406445688236 is 632886544604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21150626 + ... + 21169833.

It is an arithmetic number, because the mean of its divisors is an integer number (27659241974).

Almost surely, 2^406445688236 is an apocalyptic number.

It is an amenable number.

406445688236 is an abundant number, since it is smaller than the sum of its proper divisors (423331570984).

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

406445688236 is an equidigital number, since it uses as much as digits as its factorization.

406445688236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42320491 (or 42320468 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 56.

The spelling of 406445688236 in words is "four hundred six billion, four hundred forty-five million, six hundred eighty-eight thousand, two hundred thirty-six".