1298109 has 8 divisors (see below), whose sum is σ = 1748032. Its totient is φ = 856800.

The previous prime is 1298057. The next prime is 1298111. The reversal of 1298109 is 9018921.

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

It is not a de Polignac number, because 1298109 - 2⁸ = 1297853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298119) 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, 1792 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (218504).

2^1298109 is an apocalyptic number.

It is an amenable number.

1298109 is a deficient number, since it is larger than the sum of its proper divisors (449923).

1298109 is a wasteful number, since it uses less digits than its factorization.

1298109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1298109 is about 1139.3458649594. The cubic root of 1298109 is about 109.0863440640.

The spelling of 1298109 in words is "one million, two hundred ninety-eight thousand, one hundred nine".