7969939 has 4 divisors (see below), whose sum is σ = 7979256. Its totient is φ = 7960624.

The previous prime is 7969901. The next prime is 7969943. The reversal of 7969939 is 9399697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9399697 = 359 ⋅26183.

It is a cyclic number.

It is not a de Polignac number, because 7969939 - 2²¹ = 5872787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7969979) 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, 3229 + ... + 5134.

It is an arithmetic number, because the mean of its divisors is an integer number (1994814).

Almost surely, 2^7969939 is an apocalyptic number.

7969939 is a deficient number, since it is larger than the sum of its proper divisors (9317).

7969939 is an equidigital number, since it uses as much as digits as its factorization.

7969939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316.

The product of its digits is 826686, while the sum is 52.

The square root of 7969939 is about 2823.1080390237. The cubic root of 7969939 is about 199.7491772379.

The spelling of 7969939 in words is "seven million, nine hundred sixty-nine thousand, nine hundred thirty-nine".