875209117 has 2 divisors, whose sum is σ = 875209118. Its totient is φ = 875209116.

The previous prime is 875209073. The next prime is 875209123. The reversal of 875209117 is 711902578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621953721 + 253255396 = 24939^2 + 15914^2 .

It is a cyclic number.

It is not a de Polignac number, because 875209117 - 2¹⁹ = 874684829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 875209117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (875209417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437604558 + 437604559.

It is an arithmetic number, because the mean of its divisors is an integer number (437604559).

Almost surely, 2^875209117 is an apocalyptic number.

It is an amenable number.

875209117 is a deficient number, since it is larger than the sum of its proper divisors (1).

875209117 is an equidigital number, since it uses as much as digits as its factorization.

875209117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 875209117 is about 29583.9334267774. The cubic root of 875209117 is about 956.5417808275.

The spelling of 875209117 in words is "eight hundred seventy-five million, two hundred nine thousand, one hundred seventeen".