8400538855 has 8 divisors (see below), whose sum is σ = 10110561552. Its totient is φ = 6700487808.

The previous prime is 8400538829. The next prime is 8400538873. The reversal of 8400538855 is 5588350048.

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 8400538855 - 2⁵ = 8400538823 is a prime.

It is a super-2 number, since 2×8400538855² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2491057 + ... + 2494426.

It is an arithmetic number, because the mean of its divisors is an integer number (1263820194).

Almost surely, 2^8400538855 is an apocalyptic number.

8400538855 is a deficient number, since it is larger than the sum of its proper divisors (1710022697).

8400538855 is a wasteful number, since it uses less digits than its factorization.

8400538855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985825.

The product of its (nonzero) digits is 768000, while the sum is 46.

The square root of 8400538855 is about 91654.4535470045. The cubic root of 8400538855 is about 2032.8361801811.

The spelling of 8400538855 in words is "eight billion, four hundred million, five hundred thirty-eight thousand, eight hundred fifty-five".