84132823 has 2 divisors, whose sum is σ = 84132824. Its totient is φ = 84132822.

The previous prime is 84132809. The next prime is 84132869. The reversal of 84132823 is 32823148.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84132823 - 2⁹ = 84132311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84132803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42066411 + 42066412.

It is an arithmetic number, because the mean of its divisors is an integer number (42066412).

Almost surely, 2^84132823 is an apocalyptic number.

84132823 is a deficient number, since it is larger than the sum of its proper divisors (1).

84132823 is an equidigital number, since it uses as much as digits as its factorization.

84132823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 84132823 is about 9172.3946164565. The cubic root of 84132823 is about 438.1826261077.

It can be divided in two parts, 8413 and 2823, that added together give a square (11236 = 106²).

The spelling of 84132823 in words is "eighty-four million, one hundred thirty-two thousand, eight hundred twenty-three".