1389252 has 12 divisors (see below), whose sum is σ = 3241616. Its totient is φ = 463080.

The previous prime is 1389251. The next prime is 1389259. The reversal of 1389252 is 2529831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1389252² = 3860042239008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1389251) 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, 57874 + ... + 57897.

2^1389252 is an apocalyptic number.

1389252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1389252 is an abundant number, since it is smaller than the sum of its proper divisors (1852364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389252 is a wasteful number, since it uses less digits than its factorization.

1389252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115778 (or 115776 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1389252 is about 1178.6653469073. The cubic root of 1389252 is about 111.5818806415.

The spelling of 1389252 in words is "one million, three hundred eighty-nine thousand, two hundred fifty-two".