868904899 has 2 divisors, whose sum is σ = 868904900. Its totient is φ = 868904898.

The previous prime is 868904893. The next prime is 868904909. The reversal of 868904899 is 998409868.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868904899 - 2³ = 868904891 is a prime.

It is not a weakly prime, because it can be changed into another prime (868904891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434452449 + 434452450.

It is an arithmetic number, because the mean of its divisors is an integer number (434452450).

Almost surely, 2^868904899 is an apocalyptic number.

868904899 is a deficient number, since it is larger than the sum of its proper divisors (1).

868904899 is an equidigital number, since it uses as much as digits as its factorization.

868904899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The square root of 868904899 is about 29477.1928616006. The cubic root of 868904899 is about 954.2395558166.

The spelling of 868904899 in words is "eight hundred sixty-eight million, nine hundred four thousand, eight hundred ninety-nine".