442909641 has 8 divisors (see below), whose sum is σ = 592562880. Its totient is φ = 294264752.

The previous prime is 442909639. The next prime is 442909651. The reversal of 442909641 is 146909244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442909641 - 2¹ = 442909639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442909641.

It is not an unprimeable number, because it can be changed into a prime (442909651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251061 + ... + 252818.

It is an arithmetic number, because the mean of its divisors is an integer number (74070360).

Almost surely, 2^442909641 is an apocalyptic number.

It is an amenable number.

442909641 is a deficient number, since it is larger than the sum of its proper divisors (149653239).

442909641 is a wasteful number, since it uses less digits than its factorization.

442909641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504175.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 442909641 is about 21045.4185275561. The cubic root of 442909641 is about 762.2633595506.

The spelling of 442909641 in words is "four hundred forty-two million, nine hundred nine thousand, six hundred forty-one".