78830471 has 4 divisors (see below), whose sum is σ = 78851712. Its totient is φ = 78809232.

The previous prime is 78830459. The next prime is 78830491. The reversal of 78830471 is 17403887.

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 78830471 - 2¹⁸ = 78568327 is a prime.

It is a super-3 number, since 3×78830471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78830491) 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, 3431 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (19712928).

Almost surely, 2^78830471 is an apocalyptic number.

78830471 is a deficient number, since it is larger than the sum of its proper divisors (21241).

78830471 is a wasteful number, since it uses less digits than its factorization.

78830471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21240.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 78830471 is about 8878.6525441646. The cubic root of 78830471 is about 428.7768938242.

The spelling of 78830471 in words is "seventy-eight million, eight hundred thirty thousand, four hundred seventy-one".