40541779 has 2 divisors, whose sum is σ = 40541780. Its totient is φ = 40541778.

The previous prime is 40541747. The next prime is 40541783. The reversal of 40541779 is 97714504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40541779 - 2⁵ = 40541747 is a prime.

It is not a weakly prime, because it can be changed into another prime (40541279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20270889 + 20270890.

It is an arithmetic number, because the mean of its divisors is an integer number (20270890).

Almost surely, 2^40541779 is an apocalyptic number.

40541779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40541779 is an equidigital number, since it uses as much as digits as its factorization.

40541779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 40541779 is about 6367.2426528286. The cubic root of 40541779 is about 343.5323186441.

The spelling of 40541779 in words is "forty million, five hundred forty-one thousand, seven hundred seventy-nine".