1389577 has 8 divisors (see below), whose sum is σ = 1598400. Its totient is φ = 1183344.

The previous prime is 1389569. The next prime is 1389587. The reversal of 1389577 is 7759831.

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 1389577 - 2³ = 1389569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389547) 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, 699 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (199800).

2^1389577 is an apocalyptic number.

It is an amenable number.

1389577 is a deficient number, since it is larger than the sum of its proper divisors (208823).

1389577 is a wasteful number, since it uses less digits than its factorization.

1389577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 52920, while the sum is 40.

The square root of 1389577 is about 1178.8032066465. The cubic root of 1389577 is about 111.5905810750.

The spelling of 1389577 in words is "one million, three hundred eighty-nine thousand, five hundred seventy-seven".