789999998 has 16 divisors (see below), whose sum is σ = 1237126176. Its totient is φ = 377641440.

The previous prime is 789999989. The next prime is 790000019. The reversal of 789999998 is 899999987.

It is a Curzon number.

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, 160088 + ... + 164948.

It is an arithmetic number, because the mean of its divisors is an integer number (77320386).

Almost surely, 2^789999998 is an apocalyptic number.

789999998 is a deficient number, since it is larger than the sum of its proper divisors (447126178).

789999998 is a wasteful number, since it uses less digits than its factorization.

789999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8419.

The product of its digits is 238085568, while the sum is 77.

The square root of 789999998 is about 28106.9386095320. The cubic root of 789999998 is about 924.4335457575.

It can be divided in two parts, 7899999 and 98, that added together give a palindrome (7900097).

The spelling of 789999998 in words is "seven hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".