442869845 has 8 divisors (see below), whose sum is σ = 579756960. Its totient is φ = 322087120.

The previous prime is 442869829. The next prime is 442869851. The reversal of 442869845 is 548968244.

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

It is not a de Polignac number, because 442869845 - 2⁴ = 442869829 is a prime.

It is a super-2 number, since 2×442869845² = 392267399220648050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 442869793 and 442869802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4026035 + ... + 4026144.

It is an arithmetic number, because the mean of its divisors is an integer number (72469620).

Almost surely, 2^442869845 is an apocalyptic number.

It is an amenable number.

442869845 is a deficient number, since it is larger than the sum of its proper divisors (136887115).

442869845 is a wasteful number, since it uses less digits than its factorization.

442869845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052195.

The product of its digits is 2211840, while the sum is 50.

The square root of 442869845 is about 21044.4730273770. The cubic root of 442869845 is about 762.2405287529.

The spelling of 442869845 in words is "four hundred forty-two million, eight hundred sixty-nine thousand, eight hundred forty-five".