78493895 has 8 divisors (see below), whose sum is σ = 95789520. Its totient is φ = 61730560.

The previous prime is 78493889. The next prime is 78493927. The reversal of 78493895 is 59839487.

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

It is not a de Polignac number, because 78493895 - 2¹⁶ = 78428359 is a prime.

It is a super-2 number, since 2×78493895² = 12322583104542050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132746 + ... + 133335.

It is an arithmetic number, because the mean of its divisors is an integer number (11973690).

Almost surely, 2^78493895 is an apocalyptic number.

78493895 is a deficient number, since it is larger than the sum of its proper divisors (17295625).

78493895 is a wasteful number, since it uses less digits than its factorization.

78493895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266145.

The product of its digits is 2177280, while the sum is 53.

The square root of 78493895 is about 8859.6780415543. The cubic root of 78493895 is about 428.1657854124.

The spelling of 78493895 in words is "seventy-eight million, four hundred ninety-three thousand, eight hundred ninety-five".