7990947 has 8 divisors (see below), whose sum is σ = 11838480. Its totient is φ = 5327280.

The previous prime is 7990937. The next prime is 7990951. The reversal of 7990947 is 7490997.

It is not a de Polignac number, because 7990947 - 2¹¹ = 7988899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7990907) 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, 147954 + ... + 148007.

It is an arithmetic number, because the mean of its divisors is an integer number (1479810).

Almost surely, 2^7990947 is an apocalyptic number.

7990947 is a deficient number, since it is larger than the sum of its proper divisors (3847533).

7990947 is a wasteful number, since it uses less digits than its factorization.

7990947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295970 (or 295964 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 7990947 is about 2826.8263123156. The cubic root of 7990947 is about 199.9245298582.

The spelling of 7990947 in words is "seven million, nine hundred ninety thousand, nine hundred forty-seven".