7934409 has 16 divisors (see below), whose sum is σ = 13434240. Its totient is φ = 4533840.

The previous prime is 7934389. The next prime is 7934413. The reversal of 7934409 is 9044397.

It is not a de Polignac number, because 7934409 - 2⁷ = 7934281 is a prime.

7934409 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7934449) 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 15 ways as a sum of consecutive naturals, for example, 20802 + ... + 21179.

It is an arithmetic number, because the mean of its divisors is an integer number (839640).

Almost surely, 2^7934409 is an apocalyptic number.

It is an amenable number.

7934409 is a deficient number, since it is larger than the sum of its proper divisors (5499831).

7934409 is a wasteful number, since it uses less digits than its factorization.

7934409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41997 (or 41991 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7934409 is about 2816.8083001866. The cubic root of 7934409 is about 199.4519076795.

The spelling of 7934409 in words is "seven million, nine hundred thirty-four thousand, four hundred nine".