1389402 has 24 divisors (see below), whose sum is σ = 3440736. Its totient is φ = 396936.

The previous prime is 1389383. The next prime is 1389403. The reversal of 1389402 is 2049831.

It is not an unprimeable number, because it can be changed into a prime (1389403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5388 + ... + 5639.

It is an arithmetic number, because the mean of its divisors is an integer number (143364).

2^1389402 is an apocalyptic number.

1389402 is an abundant number, since it is smaller than the sum of its proper divisors (2051334).

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

1389402 is a wasteful number, since it uses less digits than its factorization.

1389402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11042 (or 11039 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1389402 is about 1178.7289764827. The cubic root of 1389402 is about 111.5858963948.

It can be divided in two parts, 1 and 389402, that added together give a triangular number (389403 = T₈₈₂).

The spelling of 1389402 in words is "one million, three hundred eighty-nine thousand, four hundred two".