40507673 has 4 divisors (see below), whose sum is σ = 40545828. Its totient is φ = 40469520.

The previous prime is 40507667. The next prime is 40507681. The reversal of 40507673 is 37670504.

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 38539264 + 1968409 = 6208^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 40507673 - 2⁴ = 40507657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40507603) 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, 17438 + ... + 19623.

It is an arithmetic number, because the mean of its divisors is an integer number (10136457).

Almost surely, 2^40507673 is an apocalyptic number.

It is an amenable number.

40507673 is a deficient number, since it is larger than the sum of its proper divisors (38155).

40507673 is a wasteful number, since it uses less digits than its factorization.

40507673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38154.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 40507673 is about 6364.5638499429. The cubic root of 40507673 is about 343.4359587851.

The spelling of 40507673 in words is "forty million, five hundred seven thousand, six hundred seventy-three".