865479907 has 2 divisors, whose sum is σ = 865479908. Its totient is φ = 865479906.

The previous prime is 865479899. The next prime is 865479931. The reversal of 865479907 is 709974568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 865479907 - 2³ = 865479899 is a prime.

It is not a weakly prime, because it can be changed into another prime (865479977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432739953 + 432739954.

It is an arithmetic number, because the mean of its divisors is an integer number (432739954).

Almost surely, 2^865479907 is an apocalyptic number.

865479907 is a deficient number, since it is larger than the sum of its proper divisors (1).

865479907 is an equidigital number, since it uses as much as digits as its factorization.

865479907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 865479907 is about 29419.0398721644. The cubic root of 865479907 is about 952.9841186625.

The spelling of 865479907 in words is "eight hundred sixty-five million, four hundred seventy-nine thousand, nine hundred seven".