1389617273 has 8 divisors (see below), whose sum is σ = 1568220480. Its totient is φ = 1219726480.

The previous prime is 1389617261. The next prime is 1389617279. The reversal of 1389617273 is 3727169831.

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 1389617273 - 2¹⁸ = 1389355129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389617279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177765 + ... + 2178402.

It is an arithmetic number, because the mean of its divisors is an integer number (196027560).

Almost surely, 2^1389617273 is an apocalyptic number.

It is an amenable number.

1389617273 is a deficient number, since it is larger than the sum of its proper divisors (178603207).

1389617273 is a wasteful number, since it uses less digits than its factorization.

1389617273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356207.

The product of its digits is 381024, while the sum is 47.

The square root of 1389617273 is about 37277.5706424118. The cubic root of 1389617273 is about 1115.9165911143.

The spelling of 1389617273 in words is "one billion, three hundred eighty-nine million, six hundred seventeen thousand, two hundred seventy-three".