1790423 has 4 divisors (see below), whose sum is σ = 1895760. Its totient is φ = 1685088.

The previous prime is 1790419. The next prime is 1790443. The reversal of 1790423 is 3240971.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1790423 - 2² = 1790419 is a prime.

It is a super-2 number, since 2×1790423² = 6411229037858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1790392 and 1790401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52643 + ... + 52676.

It is an arithmetic number, because the mean of its divisors is an integer number (473940).

2^1790423 is an apocalyptic number.

1790423 is a deficient number, since it is larger than the sum of its proper divisors (105337).

1790423 is a wasteful number, since it uses less digits than its factorization.

1790423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105336.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1790423 is about 1338.0668892100. The cubic root of 1790423 is about 121.4279182038.

The spelling of 1790423 in words is "one million, seven hundred ninety thousand, four hundred twenty-three".