442355471497 has 2 divisors, whose sum is σ = 442355471498. Its totient is φ = 442355471496.

The previous prime is 442355471491. The next prime is 442355471527. The reversal of 442355471497 is 794174553244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310810710016 + 131544761481 = 557504^2 + 362691^2 .

It is a cyclic number.

It is not a de Polignac number, because 442355471497 - 2¹¹ = 442355469449 is a prime.

It is not a weakly prime, because it can be changed into another prime (442355471491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221177735748 + 221177735749.

It is an arithmetic number, because the mean of its divisors is an integer number (221177735749).

Almost surely, 2^442355471497 is an apocalyptic number.

It is an amenable number.

442355471497 is a deficient number, since it is larger than the sum of its proper divisors (1).

442355471497 is an equidigital number, since it uses as much as digits as its factorization.

442355471497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 55.

The spelling of 442355471497 in words is "four hundred forty-two billion, three hundred fifty-five million, four hundred seventy-one thousand, four hundred ninety-seven".