1139568487 has 2 divisors, whose sum is σ = 1139568488. Its totient is φ = 1139568486.

The previous prime is 1139568467. The next prime is 1139568509. The reversal of 1139568487 is 7848659311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1139568487 - 2⁷ = 1139568359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139568467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569784243 + 569784244.

It is an arithmetic number, because the mean of its divisors is an integer number (569784244).

Almost surely, 2^1139568487 is an apocalyptic number.

1139568487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139568487 is an equidigital number, since it uses as much as digits as its factorization.

1139568487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 1139568487 is about 33757.4952714208. The cubic root of 1139568487 is about 1044.5121039209.

The spelling of 1139568487 in words is "one billion, one hundred thirty-nine million, five hundred sixty-eight thousand, four hundred eighty-seven".