84740823 has 10 divisors (see below), whose sum is σ = 126588264. Its totient is φ = 56493828.

The previous prime is 84740819. The next prime is 84740833. The reversal of 84740823 is 32804748.

It is not a de Polignac number, because 84740823 - 2² = 84740819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84740833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 523011 + ... + 523172.

Almost surely, 2^84740823 is an apocalyptic number.

84740823 is a deficient number, since it is larger than the sum of its proper divisors (41847441).

84740823 is a wasteful number, since it uses less digits than its factorization.

84740823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046195 (or 1046186 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 84740823 is about 9205.4778800451. The cubic root of 84740823 is about 439.2356270929.

The spelling of 84740823 in words is "eighty-four million, seven hundred forty thousand, eight hundred twenty-three".