1005436223 has 4 divisors (see below), whose sum is σ = 1096839528. Its totient is φ = 914032920.

The previous prime is 1005436217. The next prime is 1005436247. The reversal of 1005436223 is 3226345001.

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 1005436223 - 2²⁸ = 737000767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005436192 and 1005436201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005436273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45701636 + ... + 45701657.

It is an arithmetic number, because the mean of its divisors is an integer number (274209882).

Almost surely, 2^1005436223 is an apocalyptic number.

1005436223 is a deficient number, since it is larger than the sum of its proper divisors (91403305).

1005436223 is an equidigital number, since it uses as much as digits as its factorization.

1005436223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91403304.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1005436223 is about 31708.6143342783. The cubic root of 1005436223 is about 1001.8088006011.

The spelling of 1005436223 in words is "one billion, five million, four hundred thirty-six thousand, two hundred twenty-three".