1299041587 has 8 divisors (see below), whose sum is σ = 1435258656. Its totient is φ = 1169469312.

The previous prime is 1299041563. The next prime is 1299041629. The reversal of 1299041587 is 7851409921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1299041587 - 2¹⁵ = 1299008819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299041537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660788 + ... + 1661569.

It is an arithmetic number, because the mean of its divisors is an integer number (179407332).

Almost surely, 2^1299041587 is an apocalyptic number.

1299041587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1299041587 is a deficient number, since it is larger than the sum of its proper divisors (136217069).

1299041587 is a wasteful number, since it uses less digits than its factorization.

1299041587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322397.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 1299041587 is about 36042.2195071280. The cubic root of 1299041587 is about 1091.1246106803.

The spelling of 1299041587 in words is "one billion, two hundred ninety-nine million, forty-one thousand, five hundred eighty-seven".