406646046 has 24 divisors (see below), whose sum is σ = 884856960. Its totient is φ = 134965536.

The previous prime is 406646041. The next prime is 406646047. The reversal of 406646046 is 640646604.

It is a happy number.

406646046 is a `hidden beast` number, since 4 + 0 + 6 + 646 + 0 + 4 + 6 = 666.

It is a super-2 number, since 2×406646046² = 330722013454868232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 406646046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406646041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44286 + ... + 52673.

It is an arithmetic number, because the mean of its divisors is an integer number (36869040).

Almost surely, 2^406646046 is an apocalyptic number.

406646046 is an abundant number, since it is smaller than the sum of its proper divisors (478210914).

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

406646046 is a wasteful number, since it uses less digits than its factorization.

406646046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97200 (or 97197 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 406646046 is about 20165.4666695319. The cubic root of 406646046 is about 740.8646127229.

The spelling of 406646046 in words is "four hundred six million, six hundred forty-six thousand, forty-six".