78484927 has 4 divisors (see below), whose sum is σ = 79815240. Its totient is φ = 77154616.

The previous prime is 78484919. The next prime is 78484949. The reversal of 78484927 is 72948487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72948487 = 31 ⋅2353177.

It is a cyclic number.

It is not a de Polignac number, because 78484927 - 2³ = 78484919 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 (78484957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665068 + ... + 665185.

It is an arithmetic number, because the mean of its divisors is an integer number (19953810).

Almost surely, 2^78484927 is an apocalyptic number.

78484927 is a deficient number, since it is larger than the sum of its proper divisors (1330313).

78484927 is a wasteful number, since it uses less digits than its factorization.

78484927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330312.

The product of its digits is 903168, while the sum is 49.

The square root of 78484927 is about 8859.1719138980. The cubic root of 78484927 is about 428.1494786792.

The spelling of 78484927 in words is "seventy-eight million, four hundred eighty-four thousand, nine hundred twenty-seven".