78947846 has 8 divisors (see below), whose sum is σ = 120656304. Its totient is φ = 38729080.

The previous prime is 78947839. The next prime is 78947849. The reversal of 78947846 is 64874987.

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

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78947849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372290 + ... + 372501.

It is an arithmetic number, because the mean of its divisors is an integer number (15082038).

Almost surely, 2^78947846 is an apocalyptic number.

78947846 is a deficient number, since it is larger than the sum of its proper divisors (41708458).

78947846 is a wasteful number, since it uses less digits than its factorization.

78947846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744846.

The product of its digits is 2709504, while the sum is 53.

The square root of 78947846 is about 8885.2600412143. The cubic root of 78947846 is about 428.9895980800.

The spelling of 78947846 in words is "seventy-eight million, nine hundred forty-seven thousand, eight hundred forty-six".