442331647 has 8 divisors (see below), whose sum is σ = 466450560. Its totient is φ = 418296600.

The previous prime is 442331639. The next prime is 442331677. The reversal of 442331647 is 746133244.

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 442331647 - 2³ = 442331639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442331677) 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, 9979 + ... + 31372.

It is an arithmetic number, because the mean of its divisors is an integer number (58306320).

Almost surely, 2^442331647 is an apocalyptic number.

442331647 is a deficient number, since it is larger than the sum of its proper divisors (24118913).

442331647 is a wasteful number, since it uses less digits than its factorization.

442331647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41933.

The product of its digits is 48384, while the sum is 34.

The square root of 442331647 is about 21031.6819821906. The cubic root of 442331647 is about 761.9316324146.

The spelling of 442331647 in words is "four hundred forty-two million, three hundred thirty-one thousand, six hundred forty-seven".