1298938 has 4 divisors (see below), whose sum is σ = 1948410. Its totient is φ = 649468.

The previous prime is 1298923. The next prime is 1298951. The reversal of 1298938 is 8398921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 710649 + 588289 = 843^2 + 767^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1298938.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 324733 + ... + 324736.

2^1298938 is an apocalyptic number.

1298938 is a deficient number, since it is larger than the sum of its proper divisors (649472).

1298938 is an equidigital number, since it uses as much as digits as its factorization.

1298938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649471.

The product of its digits is 31104, while the sum is 40.

The square root of 1298938 is about 1139.7096121381. The cubic root of 1298938 is about 109.1095607419.

The spelling of 1298938 in words is "one million, two hundred ninety-eight thousand, nine hundred thirty-eight".