442841087 has 4 divisors (see below), whose sum is σ = 476905800. Its totient is φ = 408776376.

The previous prime is 442841083. The next prime is 442841131. The reversal of 442841087 is 780148244.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 442841087 - 2² = 442841083 is a prime.

It is a super-2 number, since 2×442841087² = 392216456670683138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442841087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442841083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17032337 + ... + 17032362.

It is an arithmetic number, because the mean of its divisors is an integer number (119226450).

Almost surely, 2^442841087 is an apocalyptic number.

442841087 is a deficient number, since it is larger than the sum of its proper divisors (34064713).

442841087 is a wasteful number, since it uses less digits than its factorization.

442841087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34064712.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 442841087 is about 21043.7897489972. The cubic root of 442841087 is about 762.2240295581.

The spelling of 442841087 in words is "four hundred forty-two million, eight hundred forty-one thousand, eighty-seven".