406442026044 has 48 divisors (see below), whose sum is σ = 1053795133440. Its totient is φ = 135473405040.

The previous prime is 406442026031. The next prime is 406442026087. The reversal of 406442026044 is 440620244604.

406442026044 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 42 + 0 + 2 + 604 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2152677 + ... + 2333859.

It is an arithmetic number, because the mean of its divisors is an integer number (21954065280).

Almost surely, 2^406442026044 is an apocalyptic number.

It is an amenable number.

406442026044 is an abundant number, since it is smaller than the sum of its proper divisors (647353107396).

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

406442026044 is a wasteful number, since it uses less digits than its factorization.

406442026044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201967 (or 201959 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 406442026044 in words is "four hundred six billion, four hundred forty-two million, twenty-six thousand, forty-four".