98779505 has 8 divisors (see below), whose sum is σ = 129311424. Its totient is φ = 71839600.

The previous prime is 98779501. The next prime is 98779553. The reversal of 98779505 is 50597789.

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

It is not a de Polignac number, because 98779505 - 2² = 98779501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98779501) 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, 897941 + ... + 898050.

It is an arithmetic number, because the mean of its divisors is an integer number (16163928).

Almost surely, 2^98779505 is an apocalyptic number.

It is an amenable number.

98779505 is a deficient number, since it is larger than the sum of its proper divisors (30531919).

98779505 is a wasteful number, since it uses less digits than its factorization.

98779505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796007.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 98779505 is about 9938.7879039649. The cubic root of 98779505 is about 462.2628031351.

The spelling of 98779505 in words is "ninety-eight million, seven hundred seventy-nine thousand, five hundred five".