78924271 has 4 divisors (see below), whose sum is σ = 83078200. Its totient is φ = 74770344.

The previous prime is 78924269. The next prime is 78924337. The reversal of 78924271 is 17242987.

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

It is a cyclic number.

It is not a de Polignac number, because 78924271 - 2¹ = 78924269 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 (78924211) 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, 2076936 + ... + 2076973.

It is an arithmetic number, because the mean of its divisors is an integer number (20769550).

Almost surely, 2^78924271 is an apocalyptic number.

78924271 is a deficient number, since it is larger than the sum of its proper divisors (4153929).

78924271 is a wasteful number, since it uses less digits than its factorization.

78924271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153928.

The product of its digits is 56448, while the sum is 40.

The square root of 78924271 is about 8883.9333068186. The cubic root of 78924271 is about 428.9468929393.

The spelling of 78924271 in words is "seventy-eight million, nine hundred twenty-four thousand, two hundred seventy-one".