39932827381 has 2 divisors, whose sum is σ = 39932827382. Its totient is φ = 39932827380.

The previous prime is 39932827349. The next prime is 39932827391. The reversal of 39932827381 is 18372823993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33547219281 + 6385608100 = 183159^2 + 79910^2 .

It is a cyclic number.

It is not a de Polignac number, because 39932827381 - 2⁵ = 39932827349 is a prime.

It is a super-2 number, since 2×39932827381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39932827301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19966413690 + 19966413691.

It is an arithmetic number, because the mean of its divisors is an integer number (19966413691).

Almost surely, 2^39932827381 is an apocalyptic number.

It is an amenable number.

39932827381 is a deficient number, since it is larger than the sum of its proper divisors (1).

39932827381 is an equidigital number, since it uses as much as digits as its factorization.

39932827381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 55.

The spelling of 39932827381 in words is "thirty-nine billion, nine hundred thirty-two million, eight hundred twenty-seven thousand, three hundred eighty-one".