39928437427 has 2 divisors, whose sum is σ = 39928437428. Its totient is φ = 39928437426.

The previous prime is 39928437403. The next prime is 39928437463. The reversal of 39928437427 is 72473482993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39928437427 - 2³¹ = 37780953779 is a prime.

It is not a weakly prime, because it can be changed into another prime (39928437467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19964218713 + 19964218714.

It is an arithmetic number, because the mean of its divisors is an integer number (19964218714).

Almost surely, 2^39928437427 is an apocalyptic number.

39928437427 is a deficient number, since it is larger than the sum of its proper divisors (1).

39928437427 is an equidigital number, since it uses as much as digits as its factorization.

39928437427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 58.

The spelling of 39928437427 in words is "thirty-nine billion, nine hundred twenty-eight million, four hundred thirty-seven thousand, four hundred twenty-seven".