8118405 has 24 divisors (see below), whose sum is σ = 14559480. Its totient is φ = 4179840.

The previous prime is 8118391. The next prime is 8118413. The reversal of 8118405 is 5048118.

8118405 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 8105409 = 114^2 + 2847^2 .

It is not a de Polignac number, because 8118405 - 2¹³ = 8110213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1806 + ... + 4415.

It is an arithmetic number, because the mean of its divisors is an integer number (606645).

Almost surely, 2^8118405 is an apocalyptic number.

It is an amenable number.

8118405 is a deficient number, since it is larger than the sum of its proper divisors (6441075).

8118405 is a wasteful number, since it uses less digits than its factorization.

8118405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261 (or 6258 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 8118405 is about 2849.2814883756. The cubic root of 8118405 is about 200.9818800031.

It can be divided in two parts, 811 and 8405, that added together give a square (9216 = 96²).

The spelling of 8118405 in words is "eight million, one hundred eighteen thousand, four hundred five".