78494323 has 4 divisors (see below), whose sum is σ = 78588720. Its totient is φ = 78399928.

The previous prime is 78494309. The next prime is 78494341. The reversal of 78494323 is 32349487.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78494323 is a prime.

It is a super-2 number, since 2×78494323² = 12322717486456658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78494303) 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, 45940 + ... + 47617.

It is an arithmetic number, because the mean of its divisors is an integer number (19647180).

Almost surely, 2^78494323 is an apocalyptic number.

78494323 is a deficient number, since it is larger than the sum of its proper divisors (94397).

78494323 is an equidigital number, since it uses as much as digits as its factorization.

78494323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94396.

The product of its digits is 145152, while the sum is 40.

The square root of 78494323 is about 8859.7021958980. The cubic root of 78494323 is about 428.1665636242.

The spelling of 78494323 in words is "seventy-eight million, four hundred ninety-four thousand, three hundred twenty-three".