7898971 has 4 divisors (see below), whose sum is σ = 8082712. Its totient is φ = 7715232.

The previous prime is 7898939. The next prime is 7898981. The reversal of 7898971 is 1798987.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7898971 - 2⁵ = 7898939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91806 + ... + 91891.

It is an arithmetic number, because the mean of its divisors is an integer number (2020678).

Almost surely, 2^7898971 is an apocalyptic number.

7898971 is a deficient number, since it is larger than the sum of its proper divisors (183741).

7898971 is a wasteful number, since it uses less digits than its factorization.

7898971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183740.

The product of its digits is 254016, while the sum is 49.

The square root of 7898971 is about 2810.5108076647. The cubic root of 7898971 is about 199.1545225425.

The spelling of 7898971 in words is "seven million, eight hundred ninety-eight thousand, nine hundred seventy-one".