442713289 has 2 divisors, whose sum is σ = 442713290. Its totient is φ = 442713288.

The previous prime is 442713259. The next prime is 442713301. The reversal of 442713289 is 982317244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442471225 + 242064 = 21035^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 442713289 - 2¹⁵ = 442680521 is a prime.

It is a super-3 number, since 3×442713289³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (442713209) 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 as a sum of consecutive naturals, namely, 221356644 + 221356645.

It is an arithmetic number, because the mean of its divisors is an integer number (221356645).

Almost surely, 2^442713289 is an apocalyptic number.

It is an amenable number.

442713289 is a deficient number, since it is larger than the sum of its proper divisors (1).

442713289 is an equidigital number, since it uses as much as digits as its factorization.

442713289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 442713289 is about 21040.7530521129. The cubic root of 442713289 is about 762.1506999587.

The spelling of 442713289 in words is "four hundred forty-two million, seven hundred thirteen thousand, two hundred eighty-nine".