40663423 has 8 divisors (see below), whose sum is σ = 43045200. Its totient is φ = 38347008.

The previous prime is 40663411. The next prime is 40663453. The reversal of 40663423 is 32436604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40663423 - 2⁵ = 40663391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40663391 and 40663400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15058 + ... + 17551.

It is an arithmetic number, because the mean of its divisors is an integer number (5380650).

Almost surely, 2^40663423 is an apocalyptic number.

40663423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40663423 is a deficient number, since it is larger than the sum of its proper divisors (2381777).

40663423 is a wasteful number, since it uses less digits than its factorization.

40663423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32681.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 40663423 is about 6376.7878277390. The cubic root of 40663423 is about 343.8755606106.

The spelling of 40663423 in words is "forty million, six hundred sixty-three thousand, four hundred twenty-three".