78999498 has 12 divisors (see below), whose sum is σ = 171165618. Its totient is φ = 26333160.

The previous prime is 78999469. The next prime is 78999523. The reversal of 78999498 is 89499987.

It can be written as a sum of positive squares in only one way, i.e., 78907689 + 91809 = 8883^2 + 303^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2194413 + ... + 2194448.

Almost surely, 2^78999498 is an apocalyptic number.

78999498 is an abundant number, since it is smaller than the sum of its proper divisors (92166120).

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

78999498 is a wasteful number, since it uses less digits than its factorization.

78999498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388869 (or 4388866 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 78999498 is about 8888.1661775644. The cubic root of 78999498 is about 429.0831338391.

It can be divided in two parts, 78999 and 498, that added together give a palindrome (79497).

The spelling of 78999498 in words is "seventy-eight million, nine hundred ninety-nine thousand, four hundred ninety-eight".