1389946 has 8 divisors (see below), whose sum is σ = 2119284. Its totient is φ = 683520.

The previous prime is 1389943. The next prime is 1389961. The reversal of 1389946 is 6499831.

It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 42025 = 1161^2 + 205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1389899 and 1389908.

It is not an unprimeable number, because it can be changed into a prime (1389943) 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, 5575 + ... + 5818.

2^1389946 is an apocalyptic number.

1389946 is a deficient number, since it is larger than the sum of its proper divisors (729338).

1389946 is a wasteful number, since it uses less digits than its factorization.

1389946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456.

The product of its digits is 46656, while the sum is 40.

The square root of 1389946 is about 1178.9597109316. The cubic root of 1389946 is about 111.6004577689.

The spelling of 1389946 in words is "one million, three hundred eighty-nine thousand, nine hundred forty-six".