40449587 has 2 divisors, whose sum is σ = 40449588. Its totient is φ = 40449586.

The previous prime is 40449581. The next prime is 40449601. The reversal of 40449587 is 78594404.

40449587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40449587 - 2¹⁰ = 40448563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40449581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20224793 + 20224794.

It is an arithmetic number, because the mean of its divisors is an integer number (20224794).

Almost surely, 2^40449587 is an apocalyptic number.

40449587 is a deficient number, since it is larger than the sum of its proper divisors (1).

40449587 is an equidigital number, since it uses as much as digits as its factorization.

40449587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 40449587 is about 6359.9989779873. The cubic root of 40449587 is about 343.2717235310.

It can be divided in two parts, 4044 and 9587, that added together give a palindrome (13631).

The spelling of 40449587 in words is "forty million, four hundred forty-nine thousand, five hundred eighty-seven".