84729863 has 2 divisors, whose sum is σ = 84729864. Its totient is φ = 84729862.

The previous prime is 84729857. The next prime is 84729877. The reversal of 84729863 is 36892748.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84729863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84729833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42364931 + 42364932.

It is an arithmetic number, because the mean of its divisors is an integer number (42364932).

Almost surely, 2^84729863 is an apocalyptic number.

84729863 is a deficient number, since it is larger than the sum of its proper divisors (1).

84729863 is an equidigital number, since it uses as much as digits as its factorization.

84729863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 84729863 is about 9204.8825630749. The cubic root of 84729863 is about 439.2166900176.

The spelling of 84729863 in words is "eighty-four million, seven hundred twenty-nine thousand, eight hundred sixty-three".