40908779 has 2 divisors, whose sum is σ = 40908780. Its totient is φ = 40908778.

The previous prime is 40908773. The next prime is 40908799. The reversal of 40908779 is 97780904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40908779 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40908773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20454389 + 20454390.

It is an arithmetic number, because the mean of its divisors is an integer number (20454390).

Almost surely, 2^40908779 is an apocalyptic number.

40908779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40908779 is an equidigital number, since it uses as much as digits as its factorization.

40908779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 40908779 is about 6395.9971075666. The cubic root of 40908779 is about 344.5658025793.

The spelling of 40908779 in words is "forty million, nine hundred eight thousand, seven hundred seventy-nine".