40043989683 has 32 divisors (see below), whose sum is σ = 60086989120. Its totient is φ = 26682589728.

The previous prime is 40043989679. The next prime is 40043989691. The reversal of 40043989683 is 38698934004.

It is a happy number.

40043989683 is a `hidden beast` number, since 40 + 0 + 439 + 8 + 96 + 83 = 666.

It is not a de Polignac number, because 40043989683 - 2² = 40043989679 is a prime.

It is a super-2 number, since 2×40043989683² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40043989603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6376341 + ... + 6382617.

It is an arithmetic number, because the mean of its divisors is an integer number (1877718410).

Almost surely, 2^40043989683 is an apocalyptic number.

40043989683 is a deficient number, since it is larger than the sum of its proper divisors (20042999437).

40043989683 is an frugal number, since it uses more digits than its factorization.

40043989683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215 (or 9197 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 40043989683 in words is "forty billion, forty-three million, nine hundred eighty-nine thousand, six hundred eighty-three".