442334645 has 8 divisors (see below), whose sum is σ = 562025304. Its totient is φ = 333051904.

The previous prime is 442334617. The next prime is 442334693. The reversal of 442334645 is 546433244.

It can be written as a sum of positive squares in 4 ways, for example, as 162843121 + 279491524 = 12761^2 + 16718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442334645 - 2²² = 438140341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601884 + ... + 2602053.

It is an arithmetic number, because the mean of its divisors is an integer number (70253163).

Almost surely, 2^442334645 is an apocalyptic number.

It is an amenable number.

442334645 is a deficient number, since it is larger than the sum of its proper divisors (119690659).

442334645 is a wasteful number, since it uses less digits than its factorization.

442334645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203959.

The product of its digits is 138240, while the sum is 35.

The square root of 442334645 is about 21031.7532554944. The cubic root of 442334645 is about 761.9333537971.

Adding to 442334645 its reverse (546433244), we get a palindrome (988767889).

The spelling of 442334645 in words is "four hundred forty-two million, three hundred thirty-four thousand, six hundred forty-five".