1300999 has 8 divisors (see below), whose sum is σ = 1517600. Its totient is φ = 1114848.

The previous prime is 1300997. The next prime is 1301011. The reversal of 1300999 is 9990031.

It is not a de Polignac number, because 1300999 - 2¹ = 1300997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1300999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (189700).

2^1300999 is an apocalyptic number.

1300999 is a deficient number, since it is larger than the sum of its proper divisors (216601).

1300999 is an frugal number, since it uses more digits than its factorization.

1300999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814 (or 3800 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1300999 is about 1140.6134314482. The cubic root of 1300999 is about 109.1672375965.

The spelling of 1300999 in words is "one million, three hundred thousand, nine hundred ninety-nine".