83347709 has 2 divisors, whose sum is σ = 83347710. Its totient is φ = 83347708.

The previous prime is 83347697. The next prime is 83347723. The reversal of 83347709 is 90774338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73582084 + 9765625 = 8578^2 + 3125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83347709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83347109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41673854 + 41673855.

It is an arithmetic number, because the mean of its divisors is an integer number (41673855).

Almost surely, 2^83347709 is an apocalyptic number.

It is an amenable number.

83347709 is a deficient number, since it is larger than the sum of its proper divisors (1).

83347709 is an equidigital number, since it uses as much as digits as its factorization.

83347709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 83347709 is about 9129.4966454893. The cubic root of 83347709 is about 436.8153475272.

The spelling of 83347709 in words is "eighty-three million, three hundred forty-seven thousand, seven hundred nine".