78847743 has 8 divisors (see below), whose sum is σ = 113217328. Its totient is φ = 48521664.

The previous prime is 78847709. The next prime is 78847753. The reversal of 78847743 is 34774887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78847743 - 2⁶ = 78847679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78847692 and 78847701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78847753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010830 + ... + 1010907.

It is an arithmetic number, because the mean of its divisors is an integer number (14152166).

Almost surely, 2^78847743 is an apocalyptic number.

78847743 is a deficient number, since it is larger than the sum of its proper divisors (34369585).

78847743 is a wasteful number, since it uses less digits than its factorization.

78847743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021753.

The product of its digits is 1053696, while the sum is 48.

The square root of 78847743 is about 8879.6251610076. The cubic root of 78847743 is about 428.8082069853.

The spelling of 78847743 in words is "seventy-eight million, eight hundred forty-seven thousand, seven hundred forty-three".