78714893 has 4 divisors (see below), whose sum is σ = 79599420. Its totient is φ = 77830368.

The previous prime is 78714877. The next prime is 78714899. The reversal of 78714893 is 39841787.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17280649 + 61434244 = 4157^2 + 7838^2 .

It is a cyclic number.

It is not a de Polignac number, because 78714893 - 2⁴ = 78714877 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 (78714899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442130 + ... + 442307.

It is an arithmetic number, because the mean of its divisors is an integer number (19899855).

Almost surely, 2^78714893 is an apocalyptic number.

It is an amenable number.

78714893 is a deficient number, since it is larger than the sum of its proper divisors (884527).

78714893 is an equidigital number, since it uses as much as digits as its factorization.

78714893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884526.

The product of its digits is 338688, while the sum is 47.

The square root of 78714893 is about 8872.1413987830. The cubic root of 78714893 is about 428.5672396363.

The spelling of 78714893 in words is "seventy-eight million, seven hundred fourteen thousand, eight hundred ninety-three".