40494727889 has 32 divisors (see below), whose sum is σ = 55781001216. Its totient is φ = 28406949120.

The previous prime is 40494727859. The next prime is 40494727891. The reversal of 40494727889 is 98872749404.

It is a happy number.

It is not a de Polignac number, because 40494727889 - 2¹² = 40494723793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40494727829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642407 + ... + 702620.

It is an arithmetic number, because the mean of its divisors is an integer number (1743156288).

Almost surely, 2^40494727889 is an apocalyptic number.

It is an amenable number.

40494727889 is a deficient number, since it is larger than the sum of its proper divisors (15286273327).

40494727889 is a wasteful number, since it uses less digits than its factorization.

40494727889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345085.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 40494727889 in words is "forty billion, four hundred ninety-four million, seven hundred twenty-seven thousand, eight hundred eighty-nine".