428246443 has 4 divisors (see below), whose sum is σ = 428395680. Its totient is φ = 428097208.

The previous prime is 428246389. The next prime is 428246447. The reversal of 428246443 is 344642824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428246443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428246447) 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, 70228 + ... + 76081.

It is an arithmetic number, because the mean of its divisors is an integer number (107098920).

Almost surely, 2^428246443 is an apocalyptic number.

428246443 is a deficient number, since it is larger than the sum of its proper divisors (149237).

428246443 is a wasteful number, since it uses less digits than its factorization.

428246443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149236.

The product of its digits is 147456, while the sum is 37.

The square root of 428246443 is about 20694.1161444503. The cubic root of 428246443 is about 753.7568202407.

The spelling of 428246443 in words is "four hundred twenty-eight million, two hundred forty-six thousand, four hundred forty-three".