7872993 has 6 divisors (see below), whose sum is σ = 11372114. Its totient is φ = 5248656.

The previous prime is 7872947. The next prime is 7873001. The reversal of 7872993 is 3992787.

It can be written as a sum of positive squares in only one way, i.e., 7551504 + 321489 = 2748^2 + 567^2 .

It is not a de Polignac number, because 7872993 - 2⁶ = 7872929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437380 + ... + 437397.

Almost surely, 2^7872993 is an apocalyptic number.

It is an amenable number.

7872993 is a deficient number, since it is larger than the sum of its proper divisors (3499121).

7872993 is a wasteful number, since it uses less digits than its factorization.

7872993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874783 (or 874780 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 7872993 is about 2805.8854217519. The cubic root of 7872993 is about 198.9359574396.

The spelling of 7872993 in words is "seven million, eight hundred seventy-two thousand, nine hundred ninety-three".