40913779 has 2 divisors, whose sum is σ = 40913780. Its totient is φ = 40913778.

The previous prime is 40913701. The next prime is 40913791. The reversal of 40913779 is 97731904.

40913779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40913779 - 2⁷ = 40913651 is a prime.

It is not a weakly prime, because it can be changed into another prime (40913879) 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 as a sum of consecutive naturals, namely, 20456889 + 20456890.

It is an arithmetic number, because the mean of its divisors is an integer number (20456890).

Almost surely, 2^40913779 is an apocalyptic number.

40913779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40913779 is an equidigital number, since it uses as much as digits as its factorization.

40913779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 40913779 is about 6396.3879650940. The cubic root of 40913779 is about 344.5798399805.

The spelling of 40913779 in words is "forty million, nine hundred thirteen thousand, seven hundred seventy-nine".