406404646322 has 8 divisors (see below), whose sum is σ = 645466203036. Its totient is φ = 191249245312.

The previous prime is 406404646301. The next prime is 406404646337. The reversal of 406404646322 is 223646404604.

It can be written as a sum of positive squares in 2 ways, for example, as 394523428321 + 11881218001 = 628111^2 + 109001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 406404646322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5976538883 + ... + 5976538950.

Almost surely, 2^406404646322 is an apocalyptic number.

406404646322 is a deficient number, since it is larger than the sum of its proper divisors (239061556714).

406404646322 is a wasteful number, since it uses less digits than its factorization.

406404646322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11953077852.

The product of its (nonzero) digits is 663552, while the sum is 41.

The spelling of 406404646322 in words is "four hundred six billion, four hundred four million, six hundred forty-six thousand, three hundred twenty-two".