78973893 has 16 divisors (see below), whose sum is σ = 117380160. Its totient is φ = 52477488.

The previous prime is 78973859. The next prime is 78973907. The reversal of 78973893 is 39837987.

It is not a de Polignac number, because 78973893 - 2¹² = 78969797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78973813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3946 + ... + 13172.

It is an arithmetic number, because the mean of its divisors is an integer number (7336260).

Almost surely, 2^78973893 is an apocalyptic number.

It is an amenable number.

78973893 is a deficient number, since it is larger than the sum of its proper divisors (38406267).

78973893 is a wasteful number, since it uses less digits than its factorization.

78973893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9553 (or 9547 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 78973893 is about 8886.7256624698. The cubic root of 78973893 is about 429.0367712625.

The spelling of 78973893 in words is "seventy-eight million, nine hundred seventy-three thousand, eight hundred ninety-three".