7934509 has 4 divisors (see below), whose sum is σ = 8655840. Its totient is φ = 7213180.

The previous prime is 7934501. The next prime is 7934513. The reversal of 7934509 is 9054397.

7934509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 9054397 = 11 ⋅823127.

It is a cyclic number.

It is not a de Polignac number, because 7934509 - 2³ = 7934501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7934501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360649 + ... + 360670.

It is an arithmetic number, because the mean of its divisors is an integer number (2163960).

Almost surely, 2^7934509 is an apocalyptic number.

It is an amenable number.

7934509 is a deficient number, since it is larger than the sum of its proper divisors (721331).

7934509 is a wasteful number, since it uses less digits than its factorization.

7934509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721330.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 7934509 is about 2816.8260507174. The cubic root of 7934509 is about 199.4527455955.

The spelling of 7934509 in words is "seven million, nine hundred thirty-four thousand, five hundred nine".