1398941 has 4 divisors (see below), whose sum is σ = 1401372. Its totient is φ = 1396512.

The previous prime is 1398911. The next prime is 1398967. The reversal of 1398941 is 1498931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1498931 = 7 ⋅214133.

It can be written as a sum of positive squares in 2 ways, for example, as 606841 + 792100 = 779^2 + 890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398941 is a prime.

It is a super-3 number, since 3×1398941³ = 8213333367097654863, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398911) 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 3 ways as a sum of consecutive naturals, for example, 191 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (350343).

2^1398941 is an apocalyptic number.

It is an amenable number.

1398941 is a deficient number, since it is larger than the sum of its proper divisors (2431).

1398941 is an equidigital number, since it uses as much as digits as its factorization.

1398941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its digits is 7776, while the sum is 35.

The square root of 1398941 is about 1182.7683627828. The cubic root of 1398941 is about 111.8406801504.

The spelling of 1398941 in words is "one million, three hundred ninety-eight thousand, nine hundred forty-one".