888844448381 has 2 divisors, whose sum is σ = 888844448382. Its totient is φ = 888844448380.

The previous prime is 888844448347. The next prime is 888844448407. The reversal of 888844448381 is 183844448888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452042420281 + 436802028100 = 672341^2 + 660910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-888844448381 is a prime.

It is a super-2 number, since 2×888844448381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (888844448321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444422224190 + 444422224191.

It is an arithmetic number, because the mean of its divisors is an integer number (444422224191).

Almost surely, 2^888844448381 is an apocalyptic number.

It is an amenable number.

888844448381 is a deficient number, since it is larger than the sum of its proper divisors (1).

888844448381 is an equidigital number, since it uses as much as digits as its factorization.

888844448381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201326592, while the sum is 68.

The spelling of 888844448381 in words is "eight hundred eighty-eight billion, eight hundred forty-four million, four hundred forty-eight thousand, three hundred eighty-one".