78034847 has 4 divisors (see below), whose sum is σ = 85128936. Its totient is φ = 70940760.

The previous prime is 78034841. The next prime is 78034867. The reversal of 78034847 is 74843087.

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

It is not a de Polignac number, because 78034847 - 2¹⁴ = 78018463 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 (78034841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3547028 + ... + 3547049.

It is an arithmetic number, because the mean of its divisors is an integer number (21282234).

Almost surely, 2^78034847 is an apocalyptic number.

78034847 is a deficient number, since it is larger than the sum of its proper divisors (7094089).

78034847 is a wasteful number, since it uses less digits than its factorization.

78034847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094088.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 78034847 is about 8833.7334689247. The cubic root of 78034847 is about 427.3294866186.

The spelling of 78034847 in words is "seventy-eight million, thirty-four thousand, eight hundred forty-seven".