442574947 has 8 divisors (see below), whose sum is σ = 469389600. Its totient is φ = 416391360.

The previous prime is 442574939. The next prime is 442574953. The reversal of 442574947 is 749475244.

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 442574947 - 2³ = 442574939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442574897 and 442574906.

It is not an unprimeable number, because it can be changed into a prime (442574917) 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, 156322 + ... + 159127.

It is an arithmetic number, because the mean of its divisors is an integer number (58673700).

Almost surely, 2^442574947 is an apocalyptic number.

442574947 is a deficient number, since it is larger than the sum of its proper divisors (26814653).

442574947 is a wasteful number, since it uses less digits than its factorization.

442574947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315533.

The product of its digits is 1128960, while the sum is 46.

The square root of 442574947 is about 21037.4653178561. The cubic root of 442574947 is about 762.0713043775.

The spelling of 442574947 in words is "four hundred forty-two million, five hundred seventy-four thousand, nine hundred forty-seven".