1023489 has 8 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 682308.

The previous prime is 1023487. The next prime is 1023499. The reversal of 1023489 is 9843201.

1023489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1023489 - 2¹ = 1023487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 37907 = 1023489 / (1 + 0 + 2 + 3 + 4 + 8 + 9).

1023489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1023487) 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, 18927 + ... + 18980.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2^1023489 is an apocalyptic number.

It is an amenable number.

1023489 is a deficient number, since it is larger than the sum of its proper divisors (492831).

1023489 is an equidigital number, since it uses as much as digits as its factorization.

1023489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37916 (or 37910 counting only the distinct ones).

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

The square root of 1023489 is about 1011.6763316397. The cubic root of 1023489 is about 100.7769150650.

The spelling of 1023489 in words is "one million, twenty-three thousand, four hundred eighty-nine".