1299355 has 8 divisors (see below), whose sum is σ = 1570464. Its totient is φ = 1032000.

The previous prime is 1299349. The next prime is 1299359. The reversal of 1299355 is 5539921.

It is a happy number.

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

It is not a de Polignac number, because 1299355 - 2⁵ = 1299323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1299355.

It is not an unprimeable number, because it can be changed into a prime (1299359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (196308).

2^1299355 is an apocalyptic number.

1299355 is a deficient number, since it is larger than the sum of its proper divisors (271109).

1299355 is a wasteful number, since it uses less digits than its factorization.

1299355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its digits is 12150, while the sum is 34.

The square root of 1299355 is about 1139.8925387948. The cubic root of 1299355 is about 109.1212353609.

The spelling of 1299355 in words is "one million, two hundred ninety-nine thousand, three hundred fifty-five".