442814807 has 4 divisors (see below), whose sum is σ = 442924416. Its totient is φ = 442705200.

The previous prime is 442814803. The next prime is 442814809. The reversal of 442814807 is 708418244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442814807 - 2² = 442814803 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 (442814803) 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, 48503 + ... + 56904.

It is an arithmetic number, because the mean of its divisors is an integer number (110731104).

Almost surely, 2^442814807 is an apocalyptic number.

442814807 is a deficient number, since it is larger than the sum of its proper divisors (109609).

442814807 is a wasteful number, since it uses less digits than its factorization.

442814807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109608.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 442814807 is about 21043.1653274882. The cubic root of 442814807 is about 762.2089514301.

The spelling of 442814807 in words is "four hundred forty-two million, eight hundred fourteen thousand, eight hundred seven".