5444347891 has 2 divisors, whose sum is σ = 5444347892. Its totient is φ = 5444347890.

The previous prime is 5444347877. The next prime is 5444347907. The reversal of 5444347891 is 1987434445.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5444347891 - 2⁵ = 5444347859 is a prime.

It is a super-2 number, since 2×5444347891² = 59281847916472295762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5444347591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722173945 + 2722173946.

It is an arithmetic number, because the mean of its divisors is an integer number (2722173946).

Almost surely, 2^5444347891 is an apocalyptic number.

5444347891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5444347891 is an equidigital number, since it uses as much as digits as its factorization.

5444347891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 49.

The square root of 5444347891 is about 73785.8244583606. The cubic root of 5444347891 is about 1759.2002964462.

The spelling of 5444347891 in words is "five billion, four hundred forty-four million, three hundred forty-seven thousand, eight hundred ninety-one".