1340004487 has 2 divisors, whose sum is σ = 1340004488. Its totient is φ = 1340004486.

The previous prime is 1340004467. The next prime is 1340004499. The reversal of 1340004487 is 7844000431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340004487 - 2¹¹ = 1340002439 is a prime.

It is a super-2 number, since 2×1340004487² = 3591224050360266338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340004427) 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, 670002243 + 670002244.

It is an arithmetic number, because the mean of its divisors is an integer number (670002244).

Almost surely, 2^1340004487 is an apocalyptic number.

1340004487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340004487 is an equidigital number, since it uses as much as digits as its factorization.

1340004487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 1340004487 is about 36606.0717231445. The cubic root of 1340004487 is about 1102.4750019956.

The spelling of 1340004487 in words is "one billion, three hundred forty million, four thousand, four hundred eighty-seven".