47686477 has 2 divisors, whose sum is σ = 47686478. Its totient is φ = 47686476.

The previous prime is 47686433. The next prime is 47686481. The reversal of 47686477 is 77468674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42784681 + 4901796 = 6541^2 + 2214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47686477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47686477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47686427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23843238 + 23843239.

It is an arithmetic number, because the mean of its divisors is an integer number (23843239).

Almost surely, 2^47686477 is an apocalyptic number.

It is an amenable number.

47686477 is a deficient number, since it is larger than the sum of its proper divisors (1).

47686477 is an equidigital number, since it uses as much as digits as its factorization.

47686477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 49.

The square root of 47686477 is about 6905.5395878961. The cubic root of 47686477 is about 362.6311268781.

The spelling of 47686477 in words is "forty-seven million, six hundred eighty-six thousand, four hundred seventy-seven".