1989702 has 48 divisors (see below), whose sum is σ = 5071248. Its totient is φ = 555840.

The previous prime is 1989683. The next prime is 1989721. The reversal of 1989702 is 2079891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1989683) and next prime (1989721).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2188 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (105651).

2^1989702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2535624).

1989702 is an abundant number, since it is smaller than the sum of its proper divisors (3081546).

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

1989702 is a wasteful number, since it uses less digits than its factorization.

1989702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1989702 is about 1410.5679707125. The cubic root of 1989702 is about 125.7754883271.

It can be divided in two parts, 198 and 9702, that multiplied together give a square (1920996 = 1386²).

The spelling of 1989702 in words is "one million, nine hundred eighty-nine thousand, seven hundred two".