407222440578 has 90 divisors (see below), whose sum is σ = 920873501163. Its totient is φ = 134503532640.

The previous prime is 407222440543. The next prime is 407222440679. The reversal of 407222440578 is 875044222704.

407222440578 is a `hidden beast` number, since 4 + 0 + 72 + 2 + 2 + 4 + 4 + 0 + 578 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 25339227489 + 381883213089 = 159183^2 + 617967^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=451233.

It is a super-2 number, since 2×407222440578² (a number of 24 digits) contains 22 as substring.

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 44 ways as a sum of consecutive naturals, for example, 1470116976 + ... + 1470117252.

Almost surely, 2^407222440578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 407222440578

407222440578 is an abundant number, since it is smaller than the sum of its proper divisors (513651060585).

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

407222440578 is an frugal number, since it uses more digits than its factorization.

407222440578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 45.

The spelling of 407222440578 in words is "four hundred seven billion, two hundred twenty-two million, four hundred forty thousand, five hundred seventy-eight".