8911918 has 4 divisors (see below), whose sum is σ = 13367880. Its totient is φ = 4455958.

The previous prime is 8911909. The next prime is 8911919. The reversal of 8911918 is 8191198.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8191198 = 2 ⋅4095599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8911919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2227978 + ... + 2227981.

It is an arithmetic number, because the mean of its divisors is an integer number (3341970).

Almost surely, 2^8911918 is an apocalyptic number.

8911918 is a deficient number, since it is larger than the sum of its proper divisors (4455962).

8911918 is a wasteful number, since it uses less digits than its factorization.

8911918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455961.

The product of its digits is 5184, while the sum is 37.

The square root of 8911918 is about 2985.2835711202. The cubic root of 8911918 is about 207.3275714692.

It can be divided in two parts, 891 and 1918, that added together give a square (2809 = 53²).

The spelling of 8911918 in words is "eight million, nine hundred eleven thousand, nine hundred eighteen".