98138789 has 8 divisors (see below), whose sum is σ = 114894528. Its totient is φ = 82067040.

The previous prime is 98138783. The next prime is 98138809. The reversal of 98138789 is 98783189.

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 98138789 - 2⁸ = 98138533 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98138789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98138783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170687 + ... + 171260.

It is an arithmetic number, because the mean of its divisors is an integer number (14361816).

Almost surely, 2^98138789 is an apocalyptic number.

It is an amenable number.

98138789 is a deficient number, since it is larger than the sum of its proper divisors (16755739).

98138789 is a wasteful number, since it uses less digits than its factorization.

98138789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341995.

The product of its digits is 870912, while the sum is 53.

The square root of 98138789 is about 9906.5023595616. The cubic root of 98138789 is about 461.2611720670.

The spelling of 98138789 in words is "ninety-eight million, one hundred thirty-eight thousand, seven hundred eighty-nine".