40865933889 has 32 divisors (see below), whose sum is σ = 66566062080. Its totient is φ = 24572192400.

The previous prime is 40865933833. The next prime is 40865933903. The reversal of 40865933889 is 98833956804.

40865933889 is a `hidden beast` number, since 4 + 0 + 8 + 6 + 593 + 38 + 8 + 9 = 666.

It is not a de Polignac number, because 40865933889 - 2¹⁵ = 40865901121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40865933809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503997 + ... + 579434.

It is an arithmetic number, because the mean of its divisors is an integer number (2080189440).

Almost surely, 2^40865933889 is an apocalyptic number.

It is an amenable number.

40865933889 is a deficient number, since it is larger than the sum of its proper divisors (25700128191).

40865933889 is a wasteful number, since it uses less digits than its factorization.

40865933889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083578 (or 1083572 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 40865933889 in words is "forty billion, eight hundred sixty-five million, nine hundred thirty-three thousand, eight hundred eighty-nine".