442302589 has 2 divisors, whose sum is σ = 442302590. Its totient is φ = 442302588.

The previous prime is 442302569. The next prime is 442302613. The reversal of 442302589 is 985203244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427786489 + 14516100 = 20683^2 + 3810^2 .

It is a cyclic number.

It is not a de Polignac number, because 442302589 - 2¹⁹ = 441778301 is a prime.

It is a super-2 number, since 2×442302589² = 391263160472205842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442302569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221151294 + 221151295.

It is an arithmetic number, because the mean of its divisors is an integer number (221151295).

Almost surely, 2^442302589 is an apocalyptic number.

It is an amenable number.

442302589 is a deficient number, since it is larger than the sum of its proper divisors (1).

442302589 is an equidigital number, since it uses as much as digits as its factorization.

442302589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 442302589 is about 21030.9911559108. The cubic root of 442302589 is about 761.9149475777.

It can be divided in two parts, 442 and 302589, that added together give a triangular number (303031 = T₇₇₈).

The spelling of 442302589 in words is "four hundred forty-two million, three hundred two thousand, five hundred eighty-nine".