7929980 has 24 divisors (see below), whose sum is σ = 16713312. Its totient is φ = 3160512.

The previous prime is 7929979. The next prime is 7929983. The reversal of 7929980 is 899297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7929983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6929 + ... + 7991.

It is an arithmetic number, because the mean of its divisors is an integer number (696388).

Almost surely, 2^7929980 is an apocalyptic number.

It is an amenable number.

7929980 is an abundant number, since it is smaller than the sum of its proper divisors (8783332).

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

7929980 is a wasteful number, since it uses less digits than its factorization.

7929980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 7929980 is about 2816.0220169594. The cubic root of 7929980 is about 199.4147893124.

The spelling of 7929980 in words is "seven million, nine hundred twenty-nine thousand, nine hundred eighty".