40436487189 has 48 divisors (see below), whose sum is σ = 68453079552. Its totient is φ = 22520169504.

The previous prime is 40436487163. The next prime is 40436487227. The reversal of 40436487189 is 98178463404.

40436487189 is a `hidden beast` number, since 40 + 43 + 6 + 487 + 1 + 89 = 666.

It is not a de Polignac number, because 40436487189 - 2⁹ = 40436486677 is a prime.

It is a super-2 number, since 2×40436487189² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40436487139) 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 47 ways as a sum of consecutive naturals, for example, 1249122 + ... + 1281084.

It is an arithmetic number, because the mean of its divisors is an integer number (1426105824).

Almost surely, 2^40436487189 is an apocalyptic number.

It is an amenable number.

40436487189 is a deficient number, since it is larger than the sum of its proper divisors (28016592363).

40436487189 is a wasteful number, since it uses less digits than its factorization.

40436487189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32486 (or 32483 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 40436487189 in words is "forty billion, four hundred thirty-six million, four hundred eighty-seven thousand, one hundred eighty-nine".