5440143491 has 4 divisors (see below), whose sum is σ = 5440789272. Its totient is φ = 5439497712.

The previous prime is 5440143487. The next prime is 5440143539. The reversal of 5440143491 is 1943410445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1943410445 = 5 ⋅388682089.

It is a cyclic number.

It is not a de Polignac number, because 5440143491 - 2² = 5440143487 is a prime.

It is a super-2 number, since 2×5440143491² = 59190322405339334162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5440143431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310085 + ... + 327158.

It is an arithmetic number, because the mean of its divisors is an integer number (1360197318).

Almost surely, 2^5440143491 is an apocalyptic number.

5440143491 is a deficient number, since it is larger than the sum of its proper divisors (645781).

5440143491 is an equidigital number, since it uses as much as digits as its factorization.

5440143491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645780.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 5440143491 is about 73757.3283884388. The cubic root of 5440143491 is about 1758.7473320971.

The spelling of 5440143491 in words is "five billion, four hundred forty million, one hundred forty-three thousand, four hundred ninety-one".