40232868779 has 4 divisors (see below), whose sum is σ = 40250509320. Its totient is φ = 40215228240.

The previous prime is 40232868769. The next prime is 40232868791. The reversal of 40232868779 is 97786823204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40232868779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40232868719) 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 3 ways as a sum of consecutive naturals, for example, 8816849 + ... + 8821410.

It is an arithmetic number, because the mean of its divisors is an integer number (10062627330).

Almost surely, 2^40232868779 is an apocalyptic number.

40232868779 is a deficient number, since it is larger than the sum of its proper divisors (17640541).

40232868779 is a wasteful number, since it uses less digits than its factorization.

40232868779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640540.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 40232868779 in words is "forty billion, two hundred thirty-two million, eight hundred sixty-eight thousand, seven hundred seventy-nine".