7942609 has 2 divisors, whose sum is σ = 7942610. Its totient is φ = 7942608.

The previous prime is 7942601. The next prime is 7942663. The reversal of 7942609 is 9062497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4601025 + 3341584 = 2145^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 7942609 - 2³ = 7942601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7942601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3971304 + 3971305.

It is an arithmetic number, because the mean of its divisors is an integer number (3971305).

Almost surely, 2^7942609 is an apocalyptic number.

It is an amenable number.

7942609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7942609 is an equidigital number, since it uses as much as digits as its factorization.

7942609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 7942609 is about 2818.2634724241. The cubic root of 7942609 is about 199.5205934316.

It can be divided in two parts, 794 and 2609, that added together give a triangular number (3403 = T₈₂).

The spelling of 7942609 in words is "seven million, nine hundred forty-two thousand, six hundred nine".