78484539 has 8 divisors (see below), whose sum is σ = 119595520. Its totient is φ = 44848296.

The previous prime is 78484531. The next prime is 78484547. The reversal of 78484539 is 93548487.

It is an interprime number because it is at equal distance from previous prime (78484531) and next prime (78484547).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78484539 - 2³ = 78484531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78484531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1868659 + ... + 1868700.

It is an arithmetic number, because the mean of its divisors is an integer number (14949440).

Almost surely, 2^78484539 is an apocalyptic number.

78484539 is a deficient number, since it is larger than the sum of its proper divisors (41110981).

78484539 is a wasteful number, since it uses less digits than its factorization.

78484539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737369.

The product of its digits is 967680, while the sum is 48.

The square root of 78484539 is about 8859.1500156618. The cubic root of 78484539 is about 428.1487731413.

The spelling of 78484539 in words is "seventy-eight million, four hundred eighty-four thousand, five hundred thirty-nine".