40403223 has 24 divisors (see below), whose sum is σ = 68503968. Its totient is φ = 22462272.

The previous prime is 40403201. The next prime is 40403243. The reversal of 40403223 is 32230404.

40403223 is a `hidden beast` number, since 40 + 403 + 223 = 666.

It is not a de Polignac number, because 40403223 - 2¹² = 40399127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40403196 and 40403205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6336 + ... + 10997.

It is an arithmetic number, because the mean of its divisors is an integer number (2854332).

Almost surely, 2^40403223 is an apocalyptic number.

40403223 is a deficient number, since it is larger than the sum of its proper divisors (28100745).

40403223 is a wasteful number, since it uses less digits than its factorization.

40403223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17383 (or 17380 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40403223 is about 6356.3529637678. The cubic root of 40403223 is about 343.1405187722.

Adding to 40403223 its reverse (32230404), we get a palindrome (72633627).

The spelling of 40403223 in words is "forty million, four hundred three thousand, two hundred twenty-three".