78444798 has 8 divisors (see below), whose sum is σ = 156889608. Its totient is φ = 26148264.

The previous prime is 78444791. The next prime is 78444799. The reversal of 78444798 is 89744487.

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

78444798 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 78444798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78444791) 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, 6537061 + ... + 6537072.

It is an arithmetic number, because the mean of its divisors is an integer number (19611201).

Almost surely, 2^78444798 is an apocalyptic number.

78444798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78444798 is a wasteful number, since it uses less digits than its factorization.

78444798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13074138.

The product of its digits is 1806336, while the sum is 51.

The square root of 78444798 is about 8856.9067963934. The cubic root of 78444798 is about 428.0764959204.

It can be divided in two parts, 7844479 and 8, that added together give a palindrome (7844487).

The spelling of 78444798 in words is "seventy-eight million, four hundred forty-four thousand, seven hundred ninety-eight".