1389241 has 4 divisors (see below), whose sum is σ = 1587712. Its totient is φ = 1190772.

The previous prime is 1389233. The next prime is 1389251. The reversal of 1389241 is 1429831.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1429831 = 13 ⋅109987.

It is a cyclic number.

It is not a de Polignac number, because 1389241 - 2³ = 1389233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1389211) 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, 99225 + ... + 99238.

It is an arithmetic number, because the mean of its divisors is an integer number (396928).

2^1389241 is an apocalyptic number.

1389241 is the 681-st hex number.

It is an amenable number.

1389241 is a deficient number, since it is larger than the sum of its proper divisors (198471).

1389241 is an equidigital number, since it uses as much as digits as its factorization.

1389241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198470.

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

The square root of 1389241 is about 1178.6606806032. The cubic root of 1389241 is about 111.5815861416.

The spelling of 1389241 in words is "one million, three hundred eighty-nine thousand, two hundred forty-one".