47777877 has 64 divisors (see below), whose sum is σ = 87552000. Its totient is φ = 25147584.

The previous prime is 47777867. The next prime is 47777881. The reversal of 47777877 is 77877774.

It is not a de Polignac number, because 47777877 - 2⁷ = 47777749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47777827) 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 in 63 ways as a sum of consecutive naturals, for example, 125874 + ... + 126252.

It is an arithmetic number, because the mean of its divisors is an integer number (1368000).

Almost surely, 2^47777877 is an apocalyptic number.

It is an amenable number.

47777877 is a deficient number, since it is larger than the sum of its proper divisors (39774123).

47777877 is a wasteful number, since it uses less digits than its factorization.

47777877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 441 counting only the distinct ones).

The product of its digits is 3764768, while the sum is 54.

The square root of 47777877 is about 6912.1542951529. The cubic root of 47777877 is about 362.8626623416.

It can be divided in two parts, 47 and 777877, that added together give a square (777924 = 882²).

The spelling of 47777877 in words is "forty-seven million, seven hundred seventy-seven thousand, eight hundred seventy-seven".