442024404397 has 2 divisors, whose sum is σ = 442024404398. Its totient is φ = 442024404396.

The previous prime is 442024404379. The next prime is 442024404413. The reversal of 442024404397 is 793404420244.

Together with previous prime (442024404379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316098075076 + 125926329321 = 562226^2 + 354861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442024404397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442024404317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221012202198 + 221012202199.

It is an arithmetic number, because the mean of its divisors is an integer number (221012202199).

Almost surely, 2^442024404397 is an apocalyptic number.

It is an amenable number.

442024404397 is a deficient number, since it is larger than the sum of its proper divisors (1).

442024404397 is an equidigital number, since it uses as much as digits as its factorization.

442024404397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 442024404397 in words is "four hundred forty-two billion, twenty-four million, four hundred four thousand, three hundred ninety-seven".