4747779878 has 4 divisors (see below), whose sum is σ = 7121669820. Its totient is φ = 2373889938.

The previous prime is 4747779851. The next prime is 4747779917. The reversal of 4747779878 is 8789777474.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1186944968 + ... + 1186944971.

It is an arithmetic number, because the mean of its divisors is an integer number (1780417455).

Almost surely, 2^4747779878 is an apocalyptic number.

4747779878 is a deficient number, since it is larger than the sum of its proper divisors (2373889942).

4747779878 is a wasteful number, since it uses less digits than its factorization.

4747779878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373889941.

The product of its digits is 154893312, while the sum is 68.

The square root of 4747779878 is about 68904.1354201618. The cubic root of 4747779878 is about 1680.7257680050.

The spelling of 4747779878 in words is "four billion, seven hundred forty-seven million, seven hundred seventy-nine thousand, eight hundred seventy-eight".