1340544599 has 2 divisors, whose sum is σ = 1340544600. Its totient is φ = 1340544598.

The previous prime is 1340544587. The next prime is 1340544607. The reversal of 1340544599 is 9954450431.

It is a strong prime.

It is an emirp because it is prime and its reverse (9954450431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1340544599 - 2²⁴ = 1323767383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340543599) 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, 670272299 + 670272300.

It is an arithmetic number, because the mean of its divisors is an integer number (670272300).

Almost surely, 2^1340544599 is an apocalyptic number.

1340544599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340544599 is an equidigital number, since it uses as much as digits as its factorization.

1340544599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 1340544599 is about 36613.4483352770. The cubic root of 1340544599 is about 1102.6231059754.

The spelling of 1340544599 in words is "one billion, three hundred forty million, five hundred forty-four thousand, five hundred ninety-nine".