4786378477 has 4 divisors (see below), whose sum is σ = 4786517500. Its totient is φ = 4786239456.

The previous prime is 4786378469. The next prime is 4786378507. The reversal of 4786378477 is 7748736874.

4786378477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3637778596 + 1148599881 = 60314^2 + 33891^2 .

It is a cyclic number.

It is not a de Polignac number, because 4786378477 - 2³ = 4786378469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4786378427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24649 + ... + 100897.

It is an arithmetic number, because the mean of its divisors is an integer number (1196629375).

Almost surely, 2^4786378477 is an apocalyptic number.

It is an amenable number.

4786378477 is a deficient number, since it is larger than the sum of its proper divisors (139023).

4786378477 is an equidigital number, since it uses as much as digits as its factorization.

4786378477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139022.

The product of its digits is 44255232, while the sum is 61.

The square root of 4786378477 is about 69183.6575861670. The cubic root of 4786378477 is about 1685.2681469429.

The spelling of 4786378477 in words is "four billion, seven hundred eighty-six million, three hundred seventy-eight thousand, four hundred seventy-seven".