428244439 has 32 divisors (see below), whose sum is σ = 533012480. Its totient is φ = 335899872.

The previous prime is 428244407. The next prime is 428244449. The reversal of 428244439 is 934442824.

It is a happy number.

It is not a de Polignac number, because 428244439 - 2⁵ = 428244407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428244449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 588694 + ... + 589420.

It is an arithmetic number, because the mean of its divisors is an integer number (16656640).

Almost surely, 2^428244439 is an apocalyptic number.

428244439 is a deficient number, since it is larger than the sum of its proper divisors (104768041).

428244439 is a wasteful number, since it uses less digits than its factorization.

428244439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its digits is 221184, while the sum is 40.

The square root of 428244439 is about 20694.0677248336. The cubic root of 428244439 is about 753.7556444916.

The spelling of 428244439 in words is "four hundred twenty-eight million, two hundred forty-four thousand, four hundred thirty-nine".