442343444 has 6 divisors (see below), whose sum is σ = 774101034. Its totient is φ = 221171720.

The previous prime is 442343441. The next prime is 442343449. The reversal of 442343444 is 444343244.

It can be written as a sum of positive squares in only one way, i.e., 426835600 + 15507844 = 20660^2 + 3938^2 .

It is a super-2 number, since 2×442343444² = 391335444899562272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442343444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442343441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55292927 + ... + 55292934.

It is an arithmetic number, because the mean of its divisors is an integer number (129016839).

Almost surely, 2^442343444 is an apocalyptic number.

It is an amenable number.

442343444 is a deficient number, since it is larger than the sum of its proper divisors (331757590).

442343444 is a wasteful number, since it uses less digits than its factorization.

442343444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110585865 (or 110585863 counting only the distinct ones).

The product of its digits is 73728, while the sum is 32.

The square root of 442343444 is about 21031.9624381559. The cubic root of 442343444 is about 761.9384059352.

Adding to 442343444 its reverse (444343244), we get a palindrome (886686688).

The spelling of 442343444 in words is "four hundred forty-two million, three hundred forty-three thousand, four hundred forty-four".