442441013 has 4 divisors (see below), whose sum is σ = 505646880. Its totient is φ = 379235148.

The previous prime is 442441007. The next prime is 442441019. The reversal of 442441013 is 310144244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (442441007) and next prime (442441019).

It is a cyclic number.

It is not a de Polignac number, because 442441013 - 2²² = 438246709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 442441013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442441019) 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 3 ways as a sum of consecutive naturals, for example, 31602923 + ... + 31602936.

It is an arithmetic number, because the mean of its divisors is an integer number (126411720).

Almost surely, 2^442441013 is an apocalyptic number.

It is an amenable number.

442441013 is a deficient number, since it is larger than the sum of its proper divisors (63205867).

442441013 is an equidigital number, since it uses as much as digits as its factorization.

442441013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63205866.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 442441013 is about 21034.2818513017. The cubic root of 442441013 is about 761.9944228184.

Adding to 442441013 its reverse (310144244), we get a palindrome (752585257).

The spelling of 442441013 in words is "four hundred forty-two million, four hundred forty-one thousand, thirteen".