4442452381 has 2 divisors, whose sum is σ = 4442452382. Its totient is φ = 4442452380.

The previous prime is 4442452279. The next prime is 4442452439. The reversal of 4442452381 is 1832542444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4347292356 + 95160025 = 65934^2 + 9755^2 .

It is a cyclic number.

It is not a de Polignac number, because 4442452381 - 2¹³ = 4442444189 is a prime.

It is a super-2 number, since 2×4442452381² = 39470766314905138322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4442452381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4442452081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221226190 + 2221226191.

It is an arithmetic number, because the mean of its divisors is an integer number (2221226191).

Almost surely, 2^4442452381 is an apocalyptic number.

It is an amenable number.

4442452381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442452381 is an equidigital number, since it uses as much as digits as its factorization.

4442452381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122880, while the sum is 37.

The square root of 4442452381 is about 66651.7245163244. The cubic root of 4442452381 is about 1643.8957036317.

The spelling of 4442452381 in words is "four billion, four hundred forty-two million, four hundred fifty-two thousand, three hundred eighty-one".