875449217 has 2 divisors, whose sum is σ = 875449218. Its totient is φ = 875449216.

The previous prime is 875449189. The next prime is 875449229. The reversal of 875449217 is 712944578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639027841 + 236421376 = 25279^2 + 15376^2 .

It is a cyclic number.

It is not a de Polignac number, because 875449217 - 2¹⁶ = 875383681 is a prime.

It is a super-2 number, since 2×875449217² = 1532822663091826178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (875449117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437724608 + 437724609.

It is an arithmetic number, because the mean of its divisors is an integer number (437724609).

Almost surely, 2^875449217 is an apocalyptic number.

It is an amenable number.

875449217 is a deficient number, since it is larger than the sum of its proper divisors (1).

875449217 is an equidigital number, since it uses as much as digits as its factorization.

875449217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 47.

The square root of 875449217 is about 29587.9910943612. The cubic root of 875449217 is about 956.6292436135.

The spelling of 875449217 in words is "eight hundred seventy-five million, four hundred forty-nine thousand, two hundred seventeen".