78958047 has 16 divisors (see below), whose sum is σ = 127395072. Its totient is φ = 42464640.

The previous prime is 78958031. The next prime is 78958067. The reversal of 78958047 is 74085987.

It is not a de Polignac number, because 78958047 - 2⁴ = 78958031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78957987 and 78958005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78958067) 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 15 ways as a sum of consecutive naturals, for example, 110229 + ... + 110942.

It is an arithmetic number, because the mean of its divisors is an integer number (7962192).

Almost surely, 2^78958047 is an apocalyptic number.

78958047 is a deficient number, since it is larger than the sum of its proper divisors (48437025).

78958047 is a wasteful number, since it uses less digits than its factorization.

78958047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221198.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 78958047 is about 8885.8340632717. The cubic root of 78958047 is about 429.0080741358.

The spelling of 78958047 in words is "seventy-eight million, nine hundred fifty-eight thousand, forty-seven".