888869 has 2 divisors, whose sum is σ = 888870. Its totient is φ = 888868.

The previous prime is 888857. The next prime is 888871. The reversal of 888869 is 968888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 9025 = 938^2 + 95^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-888869 is a prime.

It is a super-2 number, since 2×888869² = 1580176198322, which contains 22 as substring.

Together with 888871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (888809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444434 + 444435.

It is an arithmetic number, because the mean of its divisors is an integer number (444435).

2⁸⁸⁸⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

888869 is a deficient number, since it is larger than the sum of its proper divisors (1).

888869 is an equidigital number, since it uses as much as digits as its factorization.

888869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 47.

The square root of 888869 is about 942.7984938469. The cubic root of 888869 is about 96.1492542299.

The spelling of 888869 in words is "eight hundred eighty-eight thousand, eight hundred sixty-nine".