1389342241 has 4 divisors (see below), whose sum is σ = 1587819712. Its totient is φ = 1190864772.

The previous prime is 1389342239. The next prime is 1389342259. The reversal of 1389342241 is 1422439831.

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: 1422439831 = 211 ⋅6741421.

It is a cyclic number.

It is not a de Polignac number, because 1389342241 - 2¹ = 1389342239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389342241.

It is not an unprimeable number, because it can be changed into a prime (1389342541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99238725 + ... + 99238738.

It is an arithmetic number, because the mean of its divisors is an integer number (396954928).

Almost surely, 2^1389342241 is an apocalyptic number.

It is an amenable number.

1389342241 is a deficient number, since it is larger than the sum of its proper divisors (198477471).

1389342241 is an equidigital number, since it uses as much as digits as its factorization.

1389342241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198477470.

The product of its digits is 41472, while the sum is 37.

The square root of 1389342241 is about 37273.8814855657. The cubic root of 1389342241 is about 1115.8429658008.

The spelling of 1389342241 in words is "one billion, three hundred eighty-nine million, three hundred forty-two thousand, two hundred forty-one".