5439512491 has 32 divisors (see below), whose sum is σ = 6744038400. Its totient is φ = 4370260608.

The previous prime is 5439512479. The next prime is 5439512497. The reversal of 5439512491 is 1942159345.

It is not a de Polignac number, because 5439512491 - 2¹³ = 5439504299 is a prime.

It is a super-2 number, since 2×5439512491² = 59176592279490050162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5439512497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1531780 + ... + 1535326.

It is an arithmetic number, because the mean of its divisors is an integer number (210751200).

Almost surely, 2^5439512491 is an apocalyptic number.

5439512491 is a deficient number, since it is larger than the sum of its proper divisors (1304525909).

5439512491 is a wasteful number, since it uses less digits than its factorization.

5439512491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 3834 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 5439512491 is about 73753.0507233430. The cubic root of 5439512491 is about 1758.6793306753.

The spelling of 5439512491 in words is "five billion, four hundred thirty-nine million, five hundred twelve thousand, four hundred ninety-one".