1298993 has 4 divisors (see below), whose sum is σ = 1340928. Its totient is φ = 1257060.

The previous prime is 1298989. The next prime is 1299007. The reversal of 1298993 is 3998921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3998921 = 467 ⋅8563.

It is a cyclic number.

It is not a de Polignac number, because 1298993 - 2² = 1298989 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 1298993.

It is not an unprimeable number, because it can be changed into a prime (1298923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20921 + ... + 20982.

It is an arithmetic number, because the mean of its divisors is an integer number (335232).

2^1298993 is an apocalyptic number.

It is an amenable number.

1298993 is a deficient number, since it is larger than the sum of its proper divisors (41935).

1298993 is an equidigital number, since it uses as much as digits as its factorization.

1298993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41934.

The product of its digits is 34992, while the sum is 41.

The square root of 1298993 is about 1139.7337408360. The cubic root of 1298993 is about 109.1111007027. Note that the first 4 decimals are identical.

The spelling of 1298993 in words is "one million, two hundred ninety-eight thousand, nine hundred ninety-three".