5639749373 has 2 divisors, whose sum is σ = 5639749374. Its totient is φ = 5639749372.

The previous prime is 5639749279. The next prime is 5639749387. The reversal of 5639749373 is 3739479365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4414539364 + 1225210009 = 66442^2 + 35003^2 .

It is a cyclic number.

It is not a de Polignac number, because 5639749373 - 2⁸ = 5639749117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5639745373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819874686 + 2819874687.

It is an arithmetic number, because the mean of its divisors is an integer number (2819874687).

Almost surely, 2^5639749373 is an apocalyptic number.

It is an amenable number.

5639749373 is a deficient number, since it is larger than the sum of its proper divisors (1).

5639749373 is an equidigital number, since it uses as much as digits as its factorization.

5639749373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12859560, while the sum is 56.

The square root of 5639749373 is about 75098.2647802198. The cubic root of 5639749373 is about 1779.9997236249. Note that the first 3 decimals are identical.

The spelling of 5639749373 in words is "five billion, six hundred thirty-nine million, seven hundred forty-nine thousand, three hundred seventy-three".