40247413 has 2 divisors, whose sum is σ = 40247414. Its totient is φ = 40247412.

The previous prime is 40247399. The next prime is 40247423. The reversal of 40247413 is 31474204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38850289 + 1397124 = 6233^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 40247413 - 2¹⁷ = 40116341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40247423) 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 as a sum of consecutive naturals, namely, 20123706 + 20123707.

It is an arithmetic number, because the mean of its divisors is an integer number (20123707).

Almost surely, 2^40247413 is an apocalyptic number.

It is an amenable number.

40247413 is a deficient number, since it is larger than the sum of its proper divisors (1).

40247413 is an equidigital number, since it uses as much as digits as its factorization.

40247413 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 40247413 is about 6344.0848827865. The cubic root of 40247413 is about 342.6988576491.

The spelling of 40247413 in words is "forty million, two hundred forty-seven thousand, four hundred thirteen".