78863383 has 4 divisors (see below), whose sum is σ = 81582840. Its totient is φ = 76143928.

The previous prime is 78863381. The next prime is 78863399. The reversal of 78863383 is 38336887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38336887 = 17 ⋅2255111.

It is a cyclic number.

It is not a de Polignac number, because 78863383 - 2¹ = 78863381 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 (78863381) 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, 1359685 + ... + 1359742.

It is an arithmetic number, because the mean of its divisors is an integer number (20395710).

Almost surely, 2^78863383 is an apocalyptic number.

78863383 is a deficient number, since it is larger than the sum of its proper divisors (2719457).

78863383 is a wasteful number, since it uses less digits than its factorization.

78863383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719456.

The product of its digits is 580608, while the sum is 46.

The square root of 78863383 is about 8880.5057851453. The cubic root of 78863383 is about 428.8365574775.

The spelling of 78863383 in words is "seventy-eight million, eight hundred sixty-three thousand, three hundred eighty-three".