1489110921 has 27 divisors (see below), whose sum is σ = 2273461671. Its totient is φ = 939101904.

The previous prime is 1489110907. The next prime is 1489111003. The reversal of 1489110921 is 1290119841.

The square root of 1489110921 is 38589.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1480325625 + 8785296 = 38475^2 + 2964^2 .

It is not a de Polignac number, because 1489110921 - 2⁹ = 1489110409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1489110901) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2199235 + ... + 2199911.

Almost surely, 2^1489110921 is an apocalyptic number.

1489110921 is the 38589-th square number.

1489110921 is the 19295-th centered octagonal number.

It is an amenable number.

1489110921 is a deficient number, since it is larger than the sum of its proper divisors (784350750).

1489110921 is an frugal number, since it uses more digits than its factorization.

1489110921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The cubic root of 1489110921 is about 1141.9375384369.

Multiplying 1489110921 by its sum of digits (36), we get a square (53607993156 = 231534²).

Multiplying 1489110921 by its product of nonzero digits (5184), we get a square (7719551014464 = 2778408²).

The spelling of 1489110921 in words is "one billion, four hundred eighty-nine million, one hundred ten thousand, nine hundred twenty-one".