5439322391 has 2 divisors, whose sum is σ = 5439322392. Its totient is φ = 5439322390.

The previous prime is 5439322387. The next prime is 5439322409. The reversal of 5439322391 is 1932239345.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5439322391 - 2² = 5439322387 is a prime.

It is a super-3 number, since 3×5439322391³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5439322351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719661195 + 2719661196.

It is an arithmetic number, because the mean of its divisors is an integer number (2719661196).

Almost surely, 2^5439322391 is an apocalyptic number.

5439322391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5439322391 is an equidigital number, since it uses as much as digits as its factorization.

5439322391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 5439322391 is about 73751.7619518341. The cubic root of 5439322391 is about 1758.6588430038.

The spelling of 5439322391 in words is "five billion, four hundred thirty-nine million, three hundred twenty-two thousand, three hundred ninety-one".