1389272 has 8 divisors (see below), whose sum is σ = 2604900. Its totient is φ = 694632.

The previous prime is 1389259. The next prime is 1389277. The reversal of 1389272 is 2729831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86822 + ... + 86837.

2^1389272 is an apocalyptic number.

It is an amenable number.

1389272 is a deficient number, since it is larger than the sum of its proper divisors (1215628).

1389272 is a wasteful number, since it uses less digits than its factorization.

1389272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173665 (or 173661 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1389272 is about 1178.6738310491. The cubic root of 1389272 is about 111.5824160920.

It can be divided in two parts, 1389 and 272, that added together give a palindrome (1661).

The spelling of 1389272 in words is "one million, three hundred eighty-nine thousand, two hundred seventy-two".