4223969917 has 4 divisors (see below), whose sum is σ = 4229550556. Its totient is φ = 4218389280.

The previous prime is 4223969891. The next prime is 4223969921. The reversal of 4223969917 is 7199693224.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3549061476 + 674908441 = 59574^2 + 25979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4223969917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223969017) 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, 2789184 + ... + 2790697.

It is an arithmetic number, because the mean of its divisors is an integer number (1057387639).

Almost surely, 2^4223969917 is an apocalyptic number.

It is an amenable number.

4223969917 is a deficient number, since it is larger than the sum of its proper divisors (5580639).

4223969917 is an equidigital number, since it uses as much as digits as its factorization.

4223969917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580638.

The product of its digits is 1469664, while the sum is 52.

The square root of 4223969917 is about 64992.0758015929. The cubic root of 4223969917 is about 1616.4921707201.

The spelling of 4223969917 in words is "four billion, two hundred twenty-three million, nine hundred sixty-nine thousand, nine hundred seventeen".