1705440023 has 4 divisors (see below), whose sum is σ = 1949074320. Its totient is φ = 1461805728.

The previous prime is 1705440007. The next prime is 1705440031. The reversal of 1705440023 is 3200445071.

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 1705440023 - 2⁴ = 1705440007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1705439974 and 1705440001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1705440083) 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, 121817138 + ... + 121817151.

It is an arithmetic number, because the mean of its divisors is an integer number (487268580).

Almost surely, 2^1705440023 is an apocalyptic number.

1705440023 is a deficient number, since it is larger than the sum of its proper divisors (243634297).

1705440023 is an equidigital number, since it uses as much as digits as its factorization.

1705440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243634296.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1705440023 is about 41296.9735331779. The cubic root of 1705440023 is about 1194.7548905266.

Adding to 1705440023 its reverse (3200445071), we get a palindrome (4905885094).

The spelling of 1705440023 in words is "one billion, seven hundred five million, four hundred forty thousand, twenty-three".