78711379 has 4 divisors (see below), whose sum is σ = 78807384. Its totient is φ = 78615376.

The previous prime is 78711337. The next prime is 78711397. The reversal of 78711379 is 97311787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97311787 = 19 ⋅5121673.

It is a cyclic number.

It is not a de Polignac number, because 78711379 - 2¹¹ = 78709331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78711179) 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, 46762 + ... + 48415.

It is an arithmetic number, because the mean of its divisors is an integer number (19701846).

Almost surely, 2^78711379 is an apocalyptic number.

78711379 is a deficient number, since it is larger than the sum of its proper divisors (96005).

78711379 is an equidigital number, since it uses as much as digits as its factorization.

78711379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96004.

The product of its digits is 74088, while the sum is 43.

The square root of 78711379 is about 8871.9433609554. The cubic root of 78711379 is about 428.5608621575.

The spelling of 78711379 in words is "seventy-eight million, seven hundred eleven thousand, three hundred seventy-nine".