84669863 has 2 divisors, whose sum is σ = 84669864. Its totient is φ = 84669862.

The previous prime is 84669859. The next prime is 84669887. The reversal of 84669863 is 36896648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84669863 - 2² = 84669859 is a prime.

It is a super-3 number, since 3×84669863³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84663863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42334931 + 42334932.

It is an arithmetic number, because the mean of its divisors is an integer number (42334932).

Almost surely, 2^84669863 is an apocalyptic number.

84669863 is a deficient number, since it is larger than the sum of its proper divisors (1).

84669863 is an equidigital number, since it uses as much as digits as its factorization.

84669863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 84669863 is about 9201.6228459984. The cubic root of 84669863 is about 439.1129909463.

The spelling of 84669863 in words is "eighty-four million, six hundred sixty-nine thousand, eight hundred sixty-three".