442004413 has 4 divisors (see below), whose sum is σ = 442329120. Its totient is φ = 441679708.

The previous prime is 442004401. The next prime is 442004419. The reversal of 442004413 is 314400244.

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 a cyclic number.

It is not a de Polignac number, because 442004413 - 2⁹ = 442003901 is a prime.

It is a super-2 number, since 2×442004413² = 390735802222949138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442004419) 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, 160303 + ... + 163036.

It is an arithmetic number, because the mean of its divisors is an integer number (110582280).

Almost surely, 2^442004413 is an apocalyptic number.

It is an amenable number.

442004413 is a deficient number, since it is larger than the sum of its proper divisors (324707).

442004413 is a wasteful number, since it uses less digits than its factorization.

442004413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324706.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 442004413 is about 21023.9009938689. The cubic root of 442004413 is about 761.7436954168.

Adding to 442004413 its reverse (314400244), we get a palindrome (756404657).

The spelling of 442004413 in words is "four hundred forty-two million, four thousand, four hundred thirteen".