4072709 has 2 divisors, whose sum is σ = 4072710. Its totient is φ = 4072708.

The previous prime is 4072699. The next prime is 4072721. The reversal of 4072709 is 9072704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 1216609 = 1690^2 + 1103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4072709 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4072009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036354 + 2036355.

It is an arithmetic number, because the mean of its divisors is an integer number (2036355).

Almost surely, 2^4072709 is an apocalyptic number.

It is an amenable number.

4072709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4072709 is an equidigital number, since it uses as much as digits as its factorization.

4072709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 4072709 is about 2018.0953892222. The cubic root of 4072709 is about 159.6961551254.

The spelling of 4072709 in words is "four million, seventy-two thousand, seven hundred nine".