7947939 has 8 divisors (see below), whose sum is σ = 10642192. Its totient is φ = 5276160.

The previous prime is 7947937. The next prime is 7947941. The reversal of 7947939 is 9397497.

It is an interprime number because it is at equal distance from previous prime (7947937) and next prime (7947941).

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

It is not a de Polignac number, because 7947939 - 2¹ = 7947937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7947931) 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, 4774 + ... + 6219.

It is an arithmetic number, because the mean of its divisors is an integer number (1330274).

Almost surely, 2^7947939 is an apocalyptic number.

7947939 is a deficient number, since it is larger than the sum of its proper divisors (2694253).

7947939 is a wasteful number, since it uses less digits than its factorization.

7947939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11237.

The product of its digits is 428652, while the sum is 48.

The square root of 7947939 is about 2819.2089315977. The cubic root of 7947939 is about 199.5652138232.

The spelling of 7947939 in words is "seven million, nine hundred forty-seven thousand, nine hundred thirty-nine".