1298949 has 4 divisors (see below), whose sum is σ = 1731936. Its totient is φ = 865964.

The previous prime is 1298923. The next prime is 1298951. The reversal of 1298949 is 9498921.

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.

It is a cyclic number.

It is not a de Polignac number, because 1298949 - 2¹⁹ = 774661 is a prime.

It is a D-number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298909) 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, 216489 + ... + 216494.

It is an arithmetic number, because the mean of its divisors is an integer number (432984).

2^1298949 is an apocalyptic number.

It is an amenable number.

1298949 is a deficient number, since it is larger than the sum of its proper divisors (432987).

1298949 is an equidigital number, since it uses as much as digits as its factorization.

1298949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432986.

The product of its digits is 46656, while the sum is 42.

The square root of 1298949 is about 1139.7144379186. The cubic root of 1298949 is about 109.1098687375.

The spelling of 1298949 in words is "one million, two hundred ninety-eight thousand, nine hundred forty-nine".