4223918 has 4 divisors (see below), whose sum is σ = 6335880. Its totient is φ = 2111958.

The previous prime is 4223911. The next prime is 4223959. The reversal of 4223918 is 8193224.

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 (4223911) 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, 1055978 + ... + 1055981.

It is an arithmetic number, because the mean of its divisors is an integer number (1583970).

Almost surely, 2^4223918 is an apocalyptic number.

4223918 is a deficient number, since it is larger than the sum of its proper divisors (2111962).

4223918 is a wasteful number, since it uses less digits than its factorization.

4223918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111961.

The product of its digits is 3456, while the sum is 29.

The square root of 4223918 is about 2055.2172634542. The cubic root of 4223918 is about 161.6485547901.

The spelling of 4223918 in words is "four million, two hundred twenty-three thousand, nine hundred eighteen".