4444231381 has 2 divisors, whose sum is σ = 4444231382. Its totient is φ = 4444231380.

The previous prime is 4444231339. The next prime is 4444231387. The reversal of 4444231381 is 1831324444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4431564900 + 12666481 = 66570^2 + 3559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4444231381 is a prime.

It is a super-3 number, since 3×4444231381³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444231387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222115690 + 2222115691.

It is an arithmetic number, because the mean of its divisors is an integer number (2222115691).

Almost surely, 2^4444231381 is an apocalyptic number.

It is an amenable number.

4444231381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444231381 is an equidigital number, since it uses as much as digits as its factorization.

4444231381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 34.

The square root of 4444231381 is about 66665.0686716814. The cubic root of 4444231381 is about 1644.1151094852.

The spelling of 4444231381 in words is "four billion, four hundred forty-four million, two hundred thirty-one thousand, three hundred eighty-one".