8398765555 has 16 divisors (see below), whose sum is σ = 10179259200. Its totient is φ = 6651953280.

The previous prime is 8398765553. The next prime is 8398765589. The reversal of 8398765555 is 5555678938.

It is not a de Polignac number, because 8398765555 - 2¹ = 8398765553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8398765493 and 8398765502.

It is not an unprimeable number, because it can be changed into a prime (8398765553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747066 + ... + 758224.

It is an arithmetic number, because the mean of its divisors is an integer number (636203700).

Almost surely, 2^8398765555 is an apocalyptic number.

8398765555 is a deficient number, since it is larger than the sum of its proper divisors (1780493645).

8398765555 is a wasteful number, since it uses less digits than its factorization.

8398765555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12654.

The product of its digits is 45360000, while the sum is 61.

The square root of 8398765555 is about 91644.7792020909. The cubic root of 8398765555 is about 2032.6931305450.

The spelling of 8398765555 in words is "eight billion, three hundred ninety-eight million, seven hundred sixty-five thousand, five hundred fifty-five".