7917220446 has 16 divisors (see below), whose sum is σ = 15839475600. Its totient is φ = 2638234368.

The previous prime is 7917220397. The next prime is 7917220457. The reversal of 7917220446 is 6440227197.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7917220398 and 7917220407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189181 + ... + 227208.

It is an arithmetic number, because the mean of its divisors is an integer number (989967225).

Almost surely, 2^7917220446 is an apocalyptic number.

7917220446 is an abundant number, since it is smaller than the sum of its proper divisors (7922255154).

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

7917220446 is a wasteful number, since it uses less digits than its factorization.

7917220446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419563.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 7917220446 is about 88978.7640170395. The cubic root of 7917220446 is about 1993.0777728602.

The spelling of 7917220446 in words is "seven billion, nine hundred seventeen million, two hundred twenty thousand, four hundred forty-six".