8461918 has 4 divisors (see below), whose sum is σ = 12692880. Its totient is φ = 4230958.

The previous prime is 8461913. The next prime is 8461951. The reversal of 8461918 is 8191648.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461913) by changing a digit.

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 as a sum of consecutive naturals, namely, 2115478 + ... + 2115481.

It is an arithmetic number, because the mean of its divisors is an integer number (3173220).

Almost surely, 2^8461918 is an apocalyptic number.

8461918 is a deficient number, since it is larger than the sum of its proper divisors (4230962).

8461918 is a wasteful number, since it uses less digits than its factorization.

8461918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230961.

The product of its digits is 13824, while the sum is 37.

The square root of 8461918 is about 2908.9376067561. The cubic root of 8461918 is about 203.7775192107. Note that the first 3 decimals are identical.

The spelling of 8461918 in words is "eight million, four hundred sixty-one thousand, nine hundred eighteen".