1398241 has 8 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 1268112.

The previous prime is 1398227. The next prime is 1398247. The reversal of 1398241 is 1428931.

1398241 = 124² + 125² + ... + 182².

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1398241 - 2⁵ = 1398209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398247) 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 7 ways as a sum of consecutive naturals, for example, 145 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^1398241 is an apocalyptic number.

It is an amenable number.

1398241 is a deficient number, since it is larger than the sum of its proper divisors (133919).

1398241 is a wasteful number, since it uses less digits than its factorization.

1398241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its digits is 1728, while the sum is 28.

The square root of 1398241 is about 1182.4724098261. The cubic root of 1398241 is about 111.8220228142.

The spelling of 1398241 in words is "one million, three hundred ninety-eight thousand, two hundred forty-one".