40816779 has 8 divisors (see below), whose sum is σ = 57623760. Its totient is φ = 25610496.

The previous prime is 40816759. The next prime is 40816817. The reversal of 40816779 is 97761804.

40816779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40816779 - 2¹⁹ = 40292491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40816779.

It is not an unprimeable number, because it can be changed into a prime (40816729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400114 + ... + 400215.

It is an arithmetic number, because the mean of its divisors is an integer number (7202970).

Almost surely, 2^40816779 is an apocalyptic number.

40816779 is a deficient number, since it is larger than the sum of its proper divisors (16806981).

40816779 is a wasteful number, since it uses less digits than its factorization.

40816779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800349.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 40816779 is about 6388.8010612321. The cubic root of 40816779 is about 344.3073100028.

The spelling of 40816779 in words is "forty million, eight hundred sixteen thousand, seven hundred seventy-nine".