7987973 has 4 divisors (see below), whose sum is σ = 9129120. Its totient is φ = 6846828.

The previous prime is 7987957. The next prime is 7988009. The reversal of 7987973 is 3797897.

7987973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7987973 - 2⁴ = 7987957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570563 + ... + 570576.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 2^7987973 is an apocalyptic number.

It is an amenable number.

7987973 is a deficient number, since it is larger than the sum of its proper divisors (1141147).

7987973 is a wasteful number, since it uses less digits than its factorization.

7987973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141146.

The product of its digits is 666792, while the sum is 50.

The square root of 7987973 is about 2826.3002317518. The cubic root of 7987973 is about 199.8997247328.

The spelling of 7987973 in words is "seven million, nine hundred eighty-seven thousand, nine hundred seventy-three".