39681011 has 2 divisors, whose sum is σ = 39681012. Its totient is φ = 39681010.

The previous prime is 39681007. The next prime is 39681017. The reversal of 39681011 is 11018693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39681011 - 2² = 39681007 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39681017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19840505 + 19840506.

It is an arithmetic number, because the mean of its divisors is an integer number (19840506).

Almost surely, 2^39681011 is an apocalyptic number.

39681011 is a deficient number, since it is larger than the sum of its proper divisors (1).

39681011 is an equidigital number, since it uses as much as digits as its factorization.

39681011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 39681011 is about 6299.2865469035. The cubic root of 39681011 is about 341.0836560863.

The spelling of 39681011 in words is "thirty-nine million, six hundred eighty-one thousand, eleven".