78719943 has 16 divisors (see below), whose sum is σ = 108582912. Its totient is φ = 50676000.

The previous prime is 78719929. The next prime is 78719947. The reversal of 78719943 is 34991787.

It is not a de Polignac number, because 78719943 - 2⁸ = 78719687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78719892 and 78719901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78719947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75838 + ... + 76868.

It is an arithmetic number, because the mean of its divisors is an integer number (6786432).

Almost surely, 2^78719943 is an apocalyptic number.

78719943 is a deficient number, since it is larger than the sum of its proper divisors (29862969).

78719943 is a wasteful number, since it uses less digits than its factorization.

78719943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its digits is 381024, while the sum is 48.

The square root of 78719943 is about 8872.4259929289. The cubic root of 78719943 is about 428.5764044343.

The spelling of 78719943 in words is "seventy-eight million, seven hundred nineteen thousand, nine hundred forty-three".