5440891 has 2 divisors, whose sum is σ = 5440892. Its totient is φ = 5440890.

The previous prime is 5440889. The next prime is 5440931. The reversal of 5440891 is 1980445.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5440891 - 2¹ = 5440889 is a prime.

Together with 5440889, it forms a pair of twin primes.

5440891 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5440871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720445 + 2720446.

It is an arithmetic number, because the mean of its divisors is an integer number (2720446).

Almost surely, 2^5440891 is an apocalyptic number.

5440891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440891 is an equidigital number, since it uses as much as digits as its factorization.

5440891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 5440891 is about 2332.5717566669. The cubic root of 5440891 is about 175.8827882622.

It can be divided in two parts, 5 and 440891, that added together give a square (440896 = 664²).

The spelling of 5440891 in words is "five million, four hundred forty thousand, eight hundred ninety-one".