442197865 has 8 divisors (see below), whose sum is σ = 537906888. Its totient is φ = 348912000.

The previous prime is 442197851. The next prime is 442197881. The reversal of 442197865 is 568791244.

It can be written as a sum of positive squares in 4 ways, for example, as 13749264 + 428448601 = 3708^2 + 20699^2 .

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

It is not a de Polignac number, because 442197865 - 2⁷ = 442197737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605386 + ... + 606115.

It is an arithmetic number, because the mean of its divisors is an integer number (67238361).

Almost surely, 2^442197865 is an apocalyptic number.

It is an amenable number.

442197865 is a deficient number, since it is larger than the sum of its proper divisors (95709023).

442197865 is a wasteful number, since it uses less digits than its factorization.

442197865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211579.

The product of its digits is 483840, while the sum is 46.

The square root of 442197865 is about 21028.5012542501. The cubic root of 442197865 is about 761.8548099546.

The spelling of 442197865 in words is "four hundred forty-two million, one hundred ninety-seven thousand, eight hundred sixty-five".