40731673 has 4 divisors (see below), whose sum is σ = 40890420. Its totient is φ = 40572928.

The previous prime is 40731671. The next prime is 40731701. The reversal of 40731673 is 37613704.

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 18045504 + 22686169 = 4248^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 40731673 - 2¹ = 40731671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40731671) 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, 78988 + ... + 79501.

It is an arithmetic number, because the mean of its divisors is an integer number (10222605).

Almost surely, 2^40731673 is an apocalyptic number.

It is an amenable number.

40731673 is a deficient number, since it is larger than the sum of its proper divisors (158747).

40731673 is a wasteful number, since it uses less digits than its factorization.

40731673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158746.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 40731673 is about 6382.1370245397. The cubic root of 40731673 is about 344.0678414288.

The spelling of 40731673 in words is "forty million, seven hundred thirty-one thousand, six hundred seventy-three".