40717487 has 2 divisors, whose sum is σ = 40717488. Its totient is φ = 40717486.

The previous prime is 40717483. The next prime is 40717489. The reversal of 40717487 is 78471704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40717487 - 2² = 40717483 is a prime.

Together with 40717489, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40717487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40717483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20358743 + 20358744.

It is an arithmetic number, because the mean of its divisors is an integer number (20358744).

Almost surely, 2^40717487 is an apocalyptic number.

40717487 is a deficient number, since it is larger than the sum of its proper divisors (1).

40717487 is an equidigital number, since it uses as much as digits as its factorization.

40717487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 40717487 is about 6381.0255445344. The cubic root of 40717487 is about 344.0278928843.

The spelling of 40717487 in words is "forty million, seven hundred seventeen thousand, four hundred eighty-seven".