1989552 has 40 divisors (see below), whose sum is σ = 5190640. Its totient is φ = 656640.

The previous prime is 1989551. The next prime is 1989553. The reversal of 1989552 is 2559891.

It is an interprime number because it is at equal distance from previous prime (1989551) and next prime (1989553).

It is a self number, because there is not a number n which added to its sum of digits gives 1989552.

It is not an unprimeable number, because it can be changed into a prime (1989551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8574 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (129766).

2^1989552 is an apocalyptic number.

1989552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1989552 is an abundant number, since it is smaller than the sum of its proper divisors (3201088).

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

1989552 is a wasteful number, since it uses less digits than its factorization.

1989552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The square root of 1989552 is about 1410.5147996388. The cubic root of 1989552 is about 125.7723275862.

The spelling of 1989552 in words is "one million, nine hundred eighty-nine thousand, five hundred fifty-two".