1704389 has 4 divisors (see below), whose sum is σ = 1712256. Its totient is φ = 1696524.

The previous prime is 1704377. The next prime is 1704397. The reversal of 1704389 is 9834071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9834071 = 13 ⋅756467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1704389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1704289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3599 + ... + 4044.

It is an arithmetic number, because the mean of its divisors is an integer number (428064).

2^1704389 is an apocalyptic number.

It is an amenable number.

1704389 is a deficient number, since it is larger than the sum of its proper divisors (7867).

1704389 is an equidigital number, since it uses as much as digits as its factorization.

1704389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1704389 is about 1305.5225007636. The cubic root of 1704389 is about 119.4509406879.

The spelling of 1704389 in words is "one million, seven hundred four thousand, three hundred eighty-nine".