1299674587 has 2 divisors, whose sum is σ = 1299674588. Its totient is φ = 1299674586.

The previous prime is 1299674549. The next prime is 1299674609. The reversal of 1299674587 is 7854769921.

It is a strong prime.

It is an emirp because it is prime and its reverse (7854769921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299674587 - 2¹⁹ = 1299150299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299674687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649837293 + 649837294.

It is an arithmetic number, because the mean of its divisors is an integer number (649837294).

Almost surely, 2^1299674587 is an apocalyptic number.

1299674587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299674587 is an equidigital number, since it uses as much as digits as its factorization.

1299674587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 58.

The square root of 1299674587 is about 36050.9998058306. Note that the first 3 decimals coincide. The cubic root of 1299674587 is about 1091.3018104790.

The spelling of 1299674587 in words is "one billion, two hundred ninety-nine million, six hundred seventy-four thousand, five hundred eighty-seven".