7921973460 has 24 divisors (see below), whose sum is σ = 22181525856. Its totient is φ = 2112526240.

The previous prime is 7921973459. The next prime is 7921973503. The reversal of 7921973460 is 643791297.

It is a happy number.

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, 66016386 + ... + 66016505.

It is an arithmetic number, because the mean of its divisors is an integer number (924230244).

Almost surely, 2^7921973460 is an apocalyptic number.

It is an amenable number.

7921973460 is an abundant number, since it is smaller than the sum of its proper divisors (14259552396).

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

7921973460 is a wasteful number, since it uses less digits than its factorization.

7921973460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132032903 (or 132032901 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 7921973460 is about 89005.4687083889. The cubic root of 7921973460 is about 1993.4765336610.

The spelling of 7921973460 in words is "seven billion, nine hundred twenty-one million, nine hundred seventy-three thousand, four hundred sixty".