39740929 has 2 divisors, whose sum is σ = 39740930. Its totient is φ = 39740928.

The previous prime is 39740887. The next prime is 39740947. The reversal of 39740929 is 92904793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 5166529 = 5880^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 39740929 - 2⁷ = 39740801 is a prime.

It is not a weakly prime, because it can be changed into another prime (39740959) 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, 19870464 + 19870465.

It is an arithmetic number, because the mean of its divisors is an integer number (19870465).

Almost surely, 2^39740929 is an apocalyptic number.

It is an amenable number.

39740929 is a deficient number, since it is larger than the sum of its proper divisors (1).

39740929 is an equidigital number, since it uses as much as digits as its factorization.

39740929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 39740929 is about 6304.0406883205. The cubic root of 39740929 is about 341.2552475858.

The spelling of 39740929 in words is "thirty-nine million, seven hundred forty thousand, nine hundred twenty-nine".