8138858 has 32 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 3189312.

The previous prime is 8138807. The next prime is 8138861. The reversal of 8138858 is 8588318.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35741 + ... + 35967.

It is an arithmetic number, because the mean of its divisors is an integer number (474012).

Almost surely, 2^8138858 is an apocalyptic number.

8138858 is a deficient number, since it is larger than the sum of its proper divisors (7029526).

8138858 is a wasteful number, since it uses less digits than its factorization.

8138858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its digits is 61440, while the sum is 41.

The square root of 8138858 is about 2852.8683811210. The cubic root of 8138858 is about 201.1505188409.

The spelling of 8138858 in words is "eight million, one hundred thirty-eight thousand, eight hundred fifty-eight".