1389027973 has 8 divisors (see below), whose sum is σ = 1422741600. Its totient is φ = 1355653488.

The previous prime is 1389027949. The next prime is 1389028001. The reversal of 1389027973 is 3797209831.

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 1389027973 - 2²⁵ = 1355473541 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 (1389027373) 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, 76486 + ... + 92887.

It is an arithmetic number, because the mean of its divisors is an integer number (177842700).

Almost surely, 2^1389027973 is an apocalyptic number.

It is an amenable number.

1389027973 is a deficient number, since it is larger than the sum of its proper divisors (33713627).

1389027973 is a wasteful number, since it uses less digits than its factorization.

1389027973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169571.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1389027973 is about 37269.6655874452. The cubic root of 1389027973 is about 1115.7588252219.

The spelling of 1389027973 in words is "one billion, three hundred eighty-nine million, twenty-seven thousand, nine hundred seventy-three".