4223987 has 4 divisors (see below), whose sum is σ = 4295640. Its totient is φ = 4152336.

The previous prime is 4223983. The next prime is 4223993. The reversal of 4223987 is 7893224.

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 4223987 - 2² = 4223983 is a prime.

It is a d-powerful number, because it can be written as 4² + 2¹³ + 2¹⁹ + 3¹³ + 9 + 8⁷ + 7 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4223981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35738 + ... + 35855.

It is an arithmetic number, because the mean of its divisors is an integer number (1073910).

Almost surely, 2^4223987 is an apocalyptic number.

4223987 is a deficient number, since it is larger than the sum of its proper divisors (71653).

4223987 is an equidigital number, since it uses as much as digits as its factorization.

4223987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71652.

The product of its digits is 24192, while the sum is 35.

The square root of 4223987 is about 2055.2340499320. The cubic root of 4223987 is about 161.6494349910.

The spelling of 4223987 in words is "four million, two hundred twenty-three thousand, nine hundred eighty-seven".