1709420117 has 2 divisors, whose sum is σ = 1709420118. Its totient is φ = 1709420116.

The previous prime is 1709420081. The next prime is 1709420137. The reversal of 1709420117 is 7110249071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1687648561 + 21771556 = 41081^2 + 4666^2 .

It is a cyclic number.

It is not a de Polignac number, because 1709420117 - 2⁸ = 1709419861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1709420137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854710058 + 854710059.

It is an arithmetic number, because the mean of its divisors is an integer number (854710059).

Almost surely, 2^1709420117 is an apocalyptic number.

It is an amenable number.

1709420117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1709420117 is an equidigital number, since it uses as much as digits as its factorization.

1709420117 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 32.

The square root of 1709420117 is about 41345.1341393398. The cubic root of 1709420117 is about 1195.6835936367.

Adding to 1709420117 its reverse (7110249071), we get a palindrome (8819669188).

The spelling of 1709420117 in words is "one billion, seven hundred nine million, four hundred twenty thousand, one hundred seventeen".