1398843 has 16 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 921672.

The previous prime is 1398841. The next prime is 1398847. The reversal of 1398843 is 3488931.

It is not a de Polignac number, because 1398843 - 2¹ = 1398841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398798 and 1398807.

It is not an unprimeable number, because it can be changed into a prime (1398841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2530 + ... + 3032.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^1398843 is an apocalyptic number.

1398843 is a deficient number, since it is larger than the sum of its proper divisors (697797).

1398843 is a wasteful number, since it uses less digits than its factorization.

1398843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 609 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1398843 is about 1182.7269338271. The cubic root of 1398843 is about 111.8380684980.

The spelling of 1398843 in words is "one million, three hundred ninety-eight thousand, eight hundred forty-three".