47780377 has 2 divisors, whose sum is σ = 47780378. Its totient is φ = 47780376.

The previous prime is 47780347. The next prime is 47780413. The reversal of 47780377 is 77308774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46294416 + 1485961 = 6804^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 47780377 - 2¹¹ = 47778329 is a prime.

It is not a weakly prime, because it can be changed into another prime (47780347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23890188 + 23890189.

It is an arithmetic number, because the mean of its divisors is an integer number (23890189).

Almost surely, 2^47780377 is an apocalyptic number.

It is an amenable number.

47780377 is a deficient number, since it is larger than the sum of its proper divisors (1).

47780377 is an equidigital number, since it uses as much as digits as its factorization.

47780377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230496, while the sum is 43.

The square root of 47780377 is about 6912.3351336578. The cubic root of 47780377 is about 362.8689912180.

The spelling of 47780377 in words is "forty-seven million, seven hundred eighty thousand, three hundred seventy-seven".