78098489 has 8 divisors (see below), whose sum is σ = 89371968. Its totient is φ = 66854160.

The previous prime is 78098473. The next prime is 78098491. The reversal of 78098489 is 98489087.

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

It is a cyclic number.

It is not a de Polignac number, because 78098489 - 2⁴ = 78098473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78098489.

It is not an unprimeable number, because it can be changed into a prime (78098429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (11171496).

Almost surely, 2^78098489 is an apocalyptic number.

It is an amenable number.

78098489 is a deficient number, since it is larger than the sum of its proper divisors (11273479).

78098489 is a wasteful number, since it uses less digits than its factorization.

78098489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14575.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 78098489 is about 8837.3349489538. The cubic root of 78098489 is about 427.4456258147.

It can be divided in two parts, 78098 and 489, that added together give a palindrome (78587).

The spelling of 78098489 in words is "seventy-eight million, ninety-eight thousand, four hundred eighty-nine".