1299345 has 24 divisors (see below), whose sum is σ = 2174016. Its totient is φ = 662592.

The previous prime is 1299343. The next prime is 1299349. The reversal of 1299345 is 5439921.

It is not a de Polignac number, because 1299345 - 2¹ = 1299343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1299341) 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 23 ways as a sum of consecutive naturals, for example, 12564 + ... + 12666.

It is an arithmetic number, because the mean of its divisors is an integer number (90584).

2^1299345 is an apocalyptic number.

1299345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1299345 is a deficient number, since it is larger than the sum of its proper divisors (874671).

1299345 is a wasteful number, since it uses less digits than its factorization.

1299345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 140 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 1299345 is about 1139.8881524079. Note that the first 3 decimals coincide. The cubic root of 1299345 is about 109.1209554232.

The spelling of 1299345 in words is "one million, two hundred ninety-nine thousand, three hundred forty-five".