78444323 has 4 divisors (see below), whose sum is σ = 78575448. Its totient is φ = 78313200.

The previous prime is 78444319. The next prime is 78444347. The reversal of 78444323 is 32344487.

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 78444323 - 2² = 78444319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78444523) 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, 64661 + ... + 65862.

It is an arithmetic number, because the mean of its divisors is an integer number (19643862).

Almost surely, 2^78444323 is an apocalyptic number.

78444323 is a deficient number, since it is larger than the sum of its proper divisors (131125).

78444323 is a wasteful number, since it uses less digits than its factorization.

78444323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131124.

The product of its digits is 64512, while the sum is 35.

The square root of 78444323 is about 8856.8799811220. The cubic root of 78444323 is about 428.0756318872.

It can be divided in two parts, 7844 and 4323, that added together give a cube (12167 = 23³).

The spelling of 78444323 in words is "seventy-eight million, four hundred forty-four thousand, three hundred twenty-three".