40490587 has 2 divisors, whose sum is σ = 40490588. Its totient is φ = 40490586.

The previous prime is 40490573. The next prime is 40490629. The reversal of 40490587 is 78509404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40490587 - 2⁷ = 40490459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40491587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20245293 + 20245294.

It is an arithmetic number, because the mean of its divisors is an integer number (20245294).

Almost surely, 2^40490587 is an apocalyptic number.

40490587 is a deficient number, since it is larger than the sum of its proper divisors (1).

40490587 is an equidigital number, since it uses as much as digits as its factorization.

40490587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 40490587 is about 6363.2214325764. The cubic root of 40490587 is about 343.3876652844.

The spelling of 40490587 in words is "forty million, four hundred ninety thousand, five hundred eighty-seven".