7879609 has 2 divisors, whose sum is σ = 7879610. Its totient is φ = 7879608.

The previous prime is 7879589. The next prime is 7879637. The reversal of 7879609 is 9069787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 1392400 = 2547^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 7879609 - 2⁵ = 7879577 is a prime.

7879609 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7879679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939804 + 3939805.

It is an arithmetic number, because the mean of its divisors is an integer number (3939805).

Almost surely, 2^7879609 is an apocalyptic number.

It is an amenable number.

7879609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879609 is an equidigital number, since it uses as much as digits as its factorization.

7879609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 7879609 is about 2807.0641246683. The cubic root of 7879609 is about 198.9916665281.

The spelling of 7879609 in words is "seven million, eight hundred seventy-nine thousand, six hundred nine".