78884423 has 4 divisors (see below), whose sum is σ = 79883040. Its totient is φ = 77885808.

The previous prime is 78884419. The next prime is 78884441. The reversal of 78884423 is 32448887.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78884423 - 2² = 78884419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78884413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499190 + ... + 499347.

It is an arithmetic number, because the mean of its divisors is an integer number (19970760).

Almost surely, 2^78884423 is an apocalyptic number.

78884423 is a deficient number, since it is larger than the sum of its proper divisors (998617).

78884423 is an equidigital number, since it uses as much as digits as its factorization.

78884423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998616.

The product of its digits is 344064, while the sum is 44.

The square root of 78884423 is about 8881.6903233562. The cubic root of 78884423 is about 428.8746905905.

The spelling of 78884423 in words is "seventy-eight million, eight hundred eighty-four thousand, four hundred twenty-three".