47773777 has 8 divisors (see below), whose sum is σ = 48274560. Its totient is φ = 47275920.

The previous prime is 47773763. The next prime is 47773787. The reversal of 47773777 is 77737774.

It is a happy number.

47773777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47773777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47773777.

It is not an unprimeable number, because it can be changed into a prime (47773727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46374 + ... + 47392.

It is an arithmetic number, because the mean of its divisors is an integer number (6034320).

Almost surely, 2^47773777 is an apocalyptic number.

It is an amenable number.

47773777 is a deficient number, since it is larger than the sum of its proper divisors (500783).

47773777 is a wasteful number, since it uses less digits than its factorization.

47773777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its digits is 1411788, while the sum is 49.

The square root of 47773777 is about 6911.8577097623. The cubic root of 47773777 is about 362.8522825064.

The spelling of 47773777 in words is "forty-seven million, seven hundred seventy-three thousand, seven hundred seventy-seven".