7971047 has 8 divisors (see below), whose sum is σ = 9169056. Its totient is φ = 6787872.

The previous prime is 7971031. The next prime is 7971091. The reversal of 7971047 is 7401797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7971047 - 2⁴ = 7971031 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7970998 and 7971016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971017) 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 7 ways as a sum of consecutive naturals, for example, 2528 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (1146132).

Almost surely, 2^7971047 is an apocalyptic number.

7971047 is a deficient number, since it is larger than the sum of its proper divisors (1198009).

7971047 is a wasteful number, since it uses less digits than its factorization.

7971047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 7971047 is about 2823.3042698229. The cubic root of 7971047 is about 199.7584333452.

The spelling of 7971047 in words is "seven million, nine hundred seventy-one thousand, forty-seven".