102587869 has 2 divisors, whose sum is σ = 102587870. Its totient is φ = 102587868.

The previous prime is 102587867. The next prime is 102587893. The reversal of 102587869 is 968785201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 375769 = 10110^2 + 613^2 .

It is an emirp because it is prime and its reverse (968785201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102587869 - 2¹ = 102587867 is a prime.

It is a super-2 number, since 2×102587869² = 21048541731922322, which contains 22 as substring.

Together with 102587867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102587867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51293934 + 51293935.

It is an arithmetic number, because the mean of its divisors is an integer number (51293935).

Almost surely, 2^102587869 is an apocalyptic number.

It is an amenable number.

102587869 is a deficient number, since it is larger than the sum of its proper divisors (1).

102587869 is an equidigital number, since it uses as much as digits as its factorization.

102587869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 102587869 is about 10128.5669766261. The cubic root of 102587869 is about 468.1287738874.

The spelling of 102587869 in words is "one hundred two million, five hundred eighty-seven thousand, eight hundred sixty-nine".