442497343 has 2 divisors, whose sum is σ = 442497344. Its totient is φ = 442497342.

The previous prime is 442497287. The next prime is 442497353. The reversal of 442497343 is 343794244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442497343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442497296 and 442497305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442497353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221248671 + 221248672.

It is an arithmetic number, because the mean of its divisors is an integer number (221248672).

Almost surely, 2^442497343 is an apocalyptic number.

442497343 is a deficient number, since it is larger than the sum of its proper divisors (1).

442497343 is an equidigital number, since it uses as much as digits as its factorization.

442497343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 40.

The square root of 442497343 is about 21035.6208132777. The cubic root of 442497343 is about 762.0267595767.

The spelling of 442497343 in words is "four hundred forty-two million, four hundred ninety-seven thousand, three hundred forty-three".