7948009 has 8 divisors (see below), whose sum is σ = 8113760. Its totient is φ = 7783776.

The previous prime is 7947983. The next prime is 7948019. The reversal of 7948009 is 9008497.

It is a happy number.

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 7948009 - 2⁵ = 7947977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7948019) 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 7 ways as a sum of consecutive naturals, for example, 20782 + ... + 21160.

It is an arithmetic number, because the mean of its divisors is an integer number (1014220).

Almost surely, 2^7948009 is an apocalyptic number.

It is an amenable number.

7948009 is a deficient number, since it is larger than the sum of its proper divisors (165751).

7948009 is a wasteful number, since it uses less digits than its factorization.

7948009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7948009 is about 2819.2213464005. The cubic root of 7948009 is about 199.5657996993.

The spelling of 7948009 in words is "seven million, nine hundred forty-eight thousand, nine".