4243220497 has 4 divisors (see below), whose sum is σ = 4243369536. Its totient is φ = 4243071460.

The previous prime is 4243220491. The next prime is 4243220507. The reversal of 4243220497 is 7940223424.

4243220497 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4243220497 - 2¹⁹ = 4242696209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4243220491) 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, 17029 + ... + 93682.

It is an arithmetic number, because the mean of its divisors is an integer number (1060842384).

Almost surely, 2^4243220497 is an apocalyptic number.

It is an amenable number.

4243220497 is a deficient number, since it is larger than the sum of its proper divisors (149039).

4243220497 is a wasteful number, since it uses less digits than its factorization.

4243220497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149038.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 4243220497 is about 65140.0068851700. The cubic root of 4243220497 is about 1618.9441497934.

The spelling of 4243220497 in words is "four billion, two hundred forty-three million, two hundred twenty thousand, four hundred ninety-seven".