98789779 has 8 divisors (see below), whose sum is σ = 107855280. Its totient is φ = 89738400.

The previous prime is 98789767. The next prime is 98789809. The reversal of 98789779 is 97798789.

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 98789779 - 2⁷ = 98789651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98789779.

It is not an unprimeable number, because it can be changed into a prime (98789729) 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, 15669 + ... + 21049.

It is an arithmetic number, because the mean of its divisors is an integer number (13481910).

Almost surely, 2^98789779 is an apocalyptic number.

98789779 is a deficient number, since it is larger than the sum of its proper divisors (9065501).

98789779 is a wasteful number, since it uses less digits than its factorization.

98789779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7061.

The product of its digits is 16003008, while the sum is 64.

The square root of 98789779 is about 9939.3047543578. The cubic root of 98789779 is about 462.2788291430.

The spelling of 98789779 in words is "ninety-eight million, seven hundred eighty-nine thousand, seven hundred seventy-nine".