5439007997 has 2 divisors, whose sum is σ = 5439007998. Its totient is φ = 5439007996.

The previous prime is 5439007993. The next prime is 5439008017. The reversal of 5439007997 is 7997009345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4179751801 + 1259256196 = 64651^2 + 35486^2 .

It is a cyclic number.

It is not a de Polignac number, because 5439007997 - 2² = 5439007993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5439007993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719503998 + 2719503999.

It is an arithmetic number, because the mean of its divisors is an integer number (2719503999).

Almost surely, 2^5439007997 is an apocalyptic number.

It is an amenable number.

5439007997 is a deficient number, since it is larger than the sum of its proper divisors (1).

5439007997 is an equidigital number, since it uses as much as digits as its factorization.

5439007997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 5439007997 is about 73749.6304872099. The cubic root of 5439007997 is about 1758.6249587316.

The spelling of 5439007997 in words is "five billion, four hundred thirty-nine million, seven thousand, nine hundred ninety-seven".