40487 has 2 divisors, whose sum is σ = 40488. Its totient is φ = 40486.

The previous prime is 40483. The next prime is 40493. The reversal of 40487 is 78404.

40487 is nontrivially palindromic in base 5.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40487 - 2² = 40483 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20243 + 20244.

It is an arithmetic number, because the mean of its divisors is an integer number (20244).

2⁴⁰⁴⁸⁷ is an apocalyptic number.

40487 is a deficient number, since it is larger than the sum of its proper divisors (1).

40487 is an equidigital number, since it uses as much as digits as its factorization.

40487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 40487 is about 201.2138166230. The cubic root of 40487 is about 34.3377524920.

The spelling of 40487 in words is "forty thousand, four hundred eighty-seven".