864890363 has 2 divisors, whose sum is σ = 864890364. Its totient is φ = 864890362.

The previous prime is 864890353. The next prime is 864890407. The reversal of 864890363 is 363098468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864890363 - 2⁸ = 864890107 is a prime.

It is not a weakly prime, because it can be changed into another prime (864890333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432445181 + 432445182.

It is an arithmetic number, because the mean of its divisors is an integer number (432445182).

Almost surely, 2^864890363 is an apocalyptic number.

864890363 is a deficient number, since it is larger than the sum of its proper divisors (1).

864890363 is an equidigital number, since it uses as much as digits as its factorization.

864890363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 864890363 is about 29409.0183957234. The cubic root of 864890363 is about 952.7676862606.

The spelling of 864890363 in words is "eight hundred sixty-four million, eight hundred ninety thousand, three hundred sixty-three".