442685677 has 4 divisors (see below), whose sum is σ = 505926496. Its totient is φ = 379444860.

The previous prime is 442685647. The next prime is 442685687. The reversal of 442685677 is 776586244.

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 442685677 - 2¹¹ = 442683629 is a prime.

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 442685677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442685647) 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, 31620399 + ... + 31620412.

It is an arithmetic number, because the mean of its divisors is an integer number (126481624).

Almost surely, 2^442685677 is an apocalyptic number.

It is an amenable number.

442685677 is a deficient number, since it is larger than the sum of its proper divisors (63240819).

442685677 is an equidigital number, since it uses as much as digits as its factorization.

442685677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63240818.

The product of its digits is 2257920, while the sum is 49.

The square root of 442685677 is about 21040.0968866591. The cubic root of 442685677 is about 762.1348545322.

The spelling of 442685677 in words is "four hundred forty-two million, six hundred eighty-five thousand, six hundred seventy-seven".