40724413 has 2 divisors, whose sum is σ = 40724414. Its totient is φ = 40724412.

The previous prime is 40724407. The next prime is 40724443. The reversal of 40724413 is 31442704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23059204 + 17665209 = 4802^2 + 4203^2 .

It is a cyclic number.

It is not a de Polignac number, because 40724413 - 2⁹ = 40723901 is a prime.

It is equal to p_2475016 and since 40724413 and 2475016 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40724443) 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 as a sum of consecutive naturals, namely, 20362206 + 20362207.

It is an arithmetic number, because the mean of its divisors is an integer number (20362207).

Almost surely, 2^40724413 is an apocalyptic number.

It is an amenable number.

40724413 is a deficient number, since it is larger than the sum of its proper divisors (1).

40724413 is an equidigital number, since it uses as much as digits as its factorization.

40724413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40724413 is about 6381.5682241907. The cubic root of 40724413 is about 344.0473980345.

The spelling of 40724413 in words is "forty million, seven hundred twenty-four thousand, four hundred thirteen".