4218923 has 4 divisors (see below), whose sum is σ = 4281960. Its totient is φ = 4155888.

The previous prime is 4218917. The next prime is 4218947. The reversal of 4218923 is 3298124.

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

It is a cyclic number.

It is not a de Polignac number, because 4218923 - 2⁸ = 4218667 is a prime.

It is a super-2 number, since 2×4218923² = 35598622559858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4218623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31418 + ... + 31551.

It is an arithmetic number, because the mean of its divisors is an integer number (1070490).

Almost surely, 2^4218923 is an apocalyptic number.

4218923 is a deficient number, since it is larger than the sum of its proper divisors (63037).

4218923 is an equidigital number, since it uses as much as digits as its factorization.

4218923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63036.

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

The square root of 4218923 is about 2054.0017039915. The cubic root of 4218923 is about 161.5848104167.

The spelling of 4218923 in words is "four million, two hundred eighteen thousand, nine hundred twenty-three".