5687938447 has 2 divisors, whose sum is σ = 5687938448. Its totient is φ = 5687938446.

The previous prime is 5687938427. The next prime is 5687938511. The reversal of 5687938447 is 7448397865.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5687938447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5687938427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2843969223 + 2843969224.

It is an arithmetic number, because the mean of its divisors is an integer number (2843969224).

Almost surely, 2^5687938447 is an apocalyptic number.

5687938447 is a deficient number, since it is larger than the sum of its proper divisors (1).

5687938447 is an equidigital number, since it uses as much as digits as its factorization.

5687938447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The square root of 5687938447 is about 75418.4224642759. The cubic root of 5687938447 is about 1785.0551128409.

The spelling of 5687938447 in words is "five billion, six hundred eighty-seven million, nine hundred thirty-eight thousand, four hundred forty-seven".