442249794 has 120 divisors (see below), whose sum is σ = 1162302960. Its totient is φ = 126023688.

The previous prime is 442249793. The next prime is 442249859. The reversal of 442249794 is 497942244.

It is not an unprimeable number, because it can be changed into a prime (442249793) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1166697 + ... + 1167075.

It is an arithmetic number, because the mean of its divisors is an integer number (9685858).

Almost surely, 2^442249794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442249794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581151480).

442249794 is an abundant number, since it is smaller than the sum of its proper divisors (720053166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442249794 is an frugal number, since it uses more digits than its factorization.

442249794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 391 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 442249794 is about 21029.7359469871. The cubic root of 442249794 is about 761.8846313031.

The spelling of 442249794 in words is "four hundred forty-two million, two hundred forty-nine thousand, seven hundred ninety-four".