40263673 has 4 divisors (see below), whose sum is σ = 40276368. Its totient is φ = 40250980.

The previous prime is 40263649. The next prime is 40263677. The reversal of 40263673 is 37636204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40263673 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40263677) 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 3 ways as a sum of consecutive naturals, for example, 2958 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (10069092).

Almost surely, 2^40263673 is an apocalyptic number.

It is an amenable number.

40263673 is a deficient number, since it is larger than the sum of its proper divisors (12695).

40263673 is an equidigital number, since it uses as much as digits as its factorization.

40263673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12694.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 40263673 is about 6345.3662620845. The cubic root of 40263673 is about 342.7450016766.

Adding to 40263673 its reverse (37636204), we get a palindrome (77899877).

The spelling of 40263673 in words is "forty million, two hundred sixty-three thousand, six hundred seventy-three".