442910869 has 4 divisors (see below), whose sum is σ = 446292000. Its totient is φ = 439529740.

The previous prime is 442910863. The next prime is 442910873. The reversal of 442910869 is 968019244.

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 442910869 - 2⁹ = 442910357 is a prime.

It is a super-2 number, since 2×442910869² = 392340075756670322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442910863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1690369 + ... + 1690630.

It is an arithmetic number, because the mean of its divisors is an integer number (111573000).

Almost surely, 2^442910869 is an apocalyptic number.

It is an amenable number.

442910869 is a deficient number, since it is larger than the sum of its proper divisors (3381131).

442910869 is a wasteful number, since it uses less digits than its factorization.

442910869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381130.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 442910869 is about 21045.4477025318. The cubic root of 442910869 is about 762.2640640273.

The spelling of 442910869 in words is "four hundred forty-two million, nine hundred ten thousand, eight hundred sixty-nine".