442273917 has 8 divisors (see below), whose sum is σ = 589904640. Its totient is φ = 294746240.

The previous prime is 442273903. The next prime is 442273927. The reversal of 442273917 is 719372244.

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

It is a cyclic number.

It is not a de Polignac number, because 442273917 - 2⁸ = 442273661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442273927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15117 + ... + 33362.

It is an arithmetic number, because the mean of its divisors is an integer number (73738080).

Almost surely, 2^442273917 is an apocalyptic number.

It is an amenable number.

442273917 is a deficient number, since it is larger than the sum of its proper divisors (147630723).

442273917 is a wasteful number, since it uses less digits than its factorization.

442273917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51523.

The product of its digits is 84672, while the sum is 39.

The square root of 442273917 is about 21030.3094841707. The cubic root of 442273917 is about 761.8984836621.

The spelling of 442273917 in words is "four hundred forty-two million, two hundred seventy-three thousand, nine hundred seventeen".