102868839 has 8 divisors (see below), whose sum is σ = 152398320. Its totient is φ = 68579208.

The previous prime is 102868783. The next prime is 102868841. The reversal of 102868839 is 938868201.

It is not a de Polignac number, because 102868839 - 2⁸ = 102868583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102868794 and 102868803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102868879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904952 + ... + 1905005.

It is an arithmetic number, because the mean of its divisors is an integer number (19049790).

Almost surely, 2^102868839 is an apocalyptic number.

102868839 is a deficient number, since it is larger than the sum of its proper divisors (49529481).

102868839 is an equidigital number, since it uses as much as digits as its factorization.

102868839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809966 (or 3809960 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 102868839 is about 10142.4276679698. The cubic root of 102868839 is about 468.5557582407. Note that the first 3 decimals are identical.

The spelling of 102868839 in words is "one hundred two million, eight hundred sixty-eight thousand, eight hundred thirty-nine".