7994009 has 4 divisors (see below), whose sum is σ = 8043216. Its totient is φ = 7944804.

The previous prime is 7993987. The next prime is 7994017. The reversal of 7994009 is 9004997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9004997 = 347 ⋅25951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7994009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7994039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24359 + ... + 24684.

It is an arithmetic number, because the mean of its divisors is an integer number (2010804).

Almost surely, 2^7994009 is an apocalyptic number.

It is an amenable number.

7994009 is a deficient number, since it is larger than the sum of its proper divisors (49207).

7994009 is a wasteful number, since it uses less digits than its factorization.

7994009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49206.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 7994009 is about 2827.3678572128. The cubic root of 7994009 is about 199.9500625323.

The spelling of 7994009 in words is "seven million, nine hundred ninety-four thousand, nine".