7957947 has 8 divisors (see below), whose sum is σ = 10694656. Its totient is φ = 5263272.

The previous prime is 7957909. The next prime is 7957951. The reversal of 7957947 is 7497597.

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

It is not a de Polignac number, because 7957947 - 2¹⁹ = 7433659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7957896 and 7957905.

It is not an unprimeable number, because it can be changed into a prime (7957987) 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, 10063 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (1336832).

Almost surely, 2^7957947 is an apocalyptic number.

7957947 is a deficient number, since it is larger than the sum of its proper divisors (2736709).

7957947 is a wasteful number, since it uses less digits than its factorization.

7957947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21017.

The product of its digits is 555660, while the sum is 48.

The square root of 7957947 is about 2820.9833391922. The cubic root of 7957947 is about 199.6489424870.

The spelling of 7957947 in words is "seven million, nine hundred fifty-seven thousand, nine hundred forty-seven".