5639235487 has 2 divisors, whose sum is σ = 5639235488. Its totient is φ = 5639235486.

The previous prime is 5639235479. The next prime is 5639235509. The reversal of 5639235487 is 7845329365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5639235487 - 2³ = 5639235479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5639235467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819617743 + 2819617744.

It is an arithmetic number, because the mean of its divisors is an integer number (2819617744).

Almost surely, 2^5639235487 is an apocalyptic number.

5639235487 is a deficient number, since it is larger than the sum of its proper divisors (1).

5639235487 is an equidigital number, since it uses as much as digits as its factorization.

5639235487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 52.

The square root of 5639235487 is about 75094.8432783503. The cubic root of 5639235487 is about 1779.9456582956.

The spelling of 5639235487 in words is "five billion, six hundred thirty-nine million, two hundred thirty-five thousand, four hundred eighty-seven".