40989947933 has 4 divisors (see below), whose sum is σ = 44716306848. Its totient is φ = 37263589020.

The previous prime is 40989947893. The next prime is 40989947983. The reversal of 40989947933 is 33974998904.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40989947933 - 2¹² = 40989943837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40989947933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40989947983) 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 3 ways as a sum of consecutive naturals, for example, 1863179441 + ... + 1863179462.

It is an arithmetic number, because the mean of its divisors is an integer number (11179076712).

Almost surely, 2^40989947933 is an apocalyptic number.

It is an amenable number.

40989947933 is a deficient number, since it is larger than the sum of its proper divisors (3726358915).

40989947933 is a wasteful number, since it uses less digits than its factorization.

40989947933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726358914.

The product of its (nonzero) digits is 52907904, while the sum is 65.

The spelling of 40989947933 in words is "forty billion, nine hundred eighty-nine million, nine hundred forty-seven thousand, nine hundred thirty-three".