442293861 has 16 divisors (see below), whose sum is σ = 598866048. Its totient is φ = 290304000.

The previous prime is 442293823. The next prime is 442293869. The reversal of 442293861 is 168392244.

It is not a de Polignac number, because 442293861 - 2¹¹ = 442291813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442293869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275461 + ... + 277061.

It is an arithmetic number, because the mean of its divisors is an integer number (37429128).

Almost surely, 2^442293861 is an apocalyptic number.

It is an amenable number.

442293861 is a deficient number, since it is larger than the sum of its proper divisors (156572187).

442293861 is a wasteful number, since it uses less digits than its factorization.

442293861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its digits is 82944, while the sum is 39.

The square root of 442293861 is about 21030.7836515904. The cubic root of 442293861 is about 761.9099358975.

The spelling of 442293861 in words is "four hundred forty-two million, two hundred ninety-three thousand, eight hundred sixty-one".