40073663 has 4 divisors (see below), whose sum is σ = 45798480. Its totient is φ = 34348848.

The previous prime is 40073653. The next prime is 40073711. The reversal of 40073663 is 36637004.

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 40073663 - 2⁴ = 40073647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40073623) 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, 2862398 + ... + 2862411.

It is an arithmetic number, because the mean of its divisors is an integer number (11449620).

Almost surely, 2^40073663 is an apocalyptic number.

40073663 is a deficient number, since it is larger than the sum of its proper divisors (5724817).

40073663 is an equidigital number, since it uses as much as digits as its factorization.

40073663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724816.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 40073663 is about 6330.3762131488. The cubic root of 40073663 is about 342.2049971926.

It can be divided in two parts, 4007 and 3663, that multiplied together give a palindrome (14677641).

The spelling of 40073663 in words is "forty million, seventy-three thousand, six hundred sixty-three".