40718473 has 4 divisors (see below), whose sum is σ = 40798980. Its totient is φ = 40637968.

The previous prime is 40718471. The next prime is 40718507. The reversal of 40718473 is 37481704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17707264 + 23011209 = 4208^2 + 4797^2 .

It is a cyclic number.

It is not a de Polignac number, because 40718473 - 2¹ = 40718471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40718471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39490 + ... + 40507.

It is an arithmetic number, because the mean of its divisors is an integer number (10199745).

Almost surely, 2^40718473 is an apocalyptic number.

It is an amenable number.

40718473 is a deficient number, since it is larger than the sum of its proper divisors (80507).

40718473 is an equidigital number, since it uses as much as digits as its factorization.

40718473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80506.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 40718473 is about 6381.1028043748. The cubic root of 40718473 is about 344.0306698137.

It can be divided in two parts, 4071 and 8473, that added together give a square (12544 = 112²).

The spelling of 40718473 in words is "forty million, seven hundred eighteen thousand, four hundred seventy-three".