7957939 has 8 divisors (see below), whose sum is σ = 8722368. Its totient is φ = 7200360.

The previous prime is 7957909. The next prime is 7957951. The reversal of 7957939 is 9397597.

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

It is a cyclic number.

It is not a de Polignac number, because 7957939 - 2⁹ = 7957427 is a prime.

It is a Duffinian number.

7957939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7957892 and 7957901.

It is not an unprimeable number, because it can be changed into a prime (7957909) 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, 904 + ... + 4090.

It is an arithmetic number, because the mean of its divisors is an integer number (1090296).

Almost surely, 2^7957939 is an apocalyptic number.

7957939 is a deficient number, since it is larger than the sum of its proper divisors (764429).

7957939 is a wasteful number, since it uses less digits than its factorization.

7957939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425.

The product of its digits is 535815, while the sum is 49.

The square root of 7957939 is about 2820.9819212466. The cubic root of 7957939 is about 199.6488755856.

The spelling of 7957939 in words is "seven million, nine hundred fifty-seven thousand, nine hundred thirty-nine".