1790489 has 6 divisors (see below), whose sum is σ = 1855230. Its totient is φ = 1727936.

The previous prime is 1790483. The next prime is 1790501. The reversal of 1790489 is 9840971.

It can be written as a sum of positive squares in 3 ways, for example, as 144400 + 1646089 = 380^2 + 1283^2 .

It is not a de Polignac number, because 1790489 - 2⁸ = 1790233 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1790483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 224 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (309205).

2^1790489 is an apocalyptic number.

It is an amenable number.

1790489 is a deficient number, since it is larger than the sum of its proper divisors (64741).

1790489 is an equidigital number, since it uses as much as digits as its factorization.

1790489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1790489 is about 1338.0915514269. The cubic root of 1790489 is about 121.4294102430.

The spelling of 1790489 in words is "one million, seven hundred ninety thousand, four hundred eighty-nine".