40071673 has 4 divisors (see below), whose sum is σ = 40149108. Its totient is φ = 39994240.

The previous prime is 40071641. The next prime is 40071701. The reversal of 40071673 is 37617004.

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 18421264 + 21650409 = 4292^2 + 4653^2 .

It is a cyclic number.

It is not a de Polignac number, because 40071673 - 2⁵ = 40071641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40071973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37936 + ... + 38977.

It is an arithmetic number, because the mean of its divisors is an integer number (10037277).

Almost surely, 2^40071673 is an apocalyptic number.

It is an amenable number.

40071673 is a deficient number, since it is larger than the sum of its proper divisors (77435).

40071673 is an equidigital number, since it uses as much as digits as its factorization.

40071673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77434.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 40071673 is about 6330.2190325454. The cubic root of 40071673 is about 342.1993326309.

Adding to 40071673 its reverse (37617004), we get a palindrome (77688677).

The spelling of 40071673 in words is "forty million, seventy-one thousand, six hundred seventy-three".