40947877 has 2 divisors, whose sum is σ = 40947878. Its totient is φ = 40947876.

The previous prime is 40947847. The next prime is 40947887. The reversal of 40947877 is 77874904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 676 = 6399^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 40947877 - 2¹⁵ = 40915109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40947847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20473938 + 20473939.

It is an arithmetic number, because the mean of its divisors is an integer number (20473939).

Almost surely, 2^40947877 is an apocalyptic number.

It is an amenable number.

40947877 is a deficient number, since it is larger than the sum of its proper divisors (1).

40947877 is an equidigital number, since it uses as much as digits as its factorization.

40947877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 40947877 is about 6399.0528205352. The cubic root of 40947877 is about 344.6755389612.

The spelling of 40947877 in words is "forty million, nine hundred forty-seven thousand, eight hundred seventy-seven".