442332413 has 4 divisors (see below), whose sum is σ = 442732380. Its totient is φ = 441932448.

The previous prime is 442332409. The next prime is 442332421. The reversal of 442332413 is 314233244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75724804 + 366607609 = 8702^2 + 19147^2 .

It is a cyclic number.

It is not a de Polignac number, because 442332413 - 2² = 442332409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442331413) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 198320 + ... + 200537.

It is an arithmetic number, because the mean of its divisors is an integer number (110683095).

Almost surely, 2^442332413 is an apocalyptic number.

It is an amenable number.

442332413 is a deficient number, since it is larger than the sum of its proper divisors (399967).

442332413 is a wasteful number, since it uses less digits than its factorization.

442332413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399966.

The product of its digits is 6912, while the sum is 26.

The square root of 442332413 is about 21031.7001928042. The cubic root of 442332413 is about 761.9320722349.

Adding to 442332413 its reverse (314233244), we get a palindrome (756565657).

It can be divided in two parts, 44233241 and 3, that added together give a palindrome (44233244).

The spelling of 442332413 in words is "four hundred forty-two million, three hundred thirty-two thousand, four hundred thirteen".