39461728477 has 2 divisors, whose sum is σ = 39461728478. Its totient is φ = 39461728476.

The previous prime is 39461728459. The next prime is 39461728513. The reversal of 39461728477 is 77482716493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35113512996 + 4348215481 = 187386^2 + 65941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39461728477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39461720477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19730864238 + 19730864239.

It is an arithmetic number, because the mean of its divisors is an integer number (19730864239).

Almost surely, 2^39461728477 is an apocalyptic number.

It is an amenable number.

39461728477 is a deficient number, since it is larger than the sum of its proper divisors (1).

39461728477 is an equidigital number, since it uses as much as digits as its factorization.

39461728477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 58.

The spelling of 39461728477 in words is "thirty-nine billion, four hundred sixty-one million, seven hundred twenty-eight thousand, four hundred seventy-seven".