4778831 has 2 divisors, whose sum is σ = 4778832. Its totient is φ = 4778830.

The previous prime is 4778827. The next prime is 4778833. The reversal of 4778831 is 1388774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4778831 - 2² = 4778827 is a prime.

It is a super-2 number, since 2×4778831² = 45674451453122, which contains 22 as substring.

Together with 4778833, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4778833) 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 as a sum of consecutive naturals, namely, 2389415 + 2389416.

It is an arithmetic number, because the mean of its divisors is an integer number (2389416).

Almost surely, 2^4778831 is an apocalyptic number.

4778831 is a deficient number, since it is larger than the sum of its proper divisors (1).

4778831 is an equidigital number, since it uses as much as digits as its factorization.

4778831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 4778831 is about 2186.0537504828. The cubic root of 4778831 is about 168.4381866974.

The spelling of 4778831 in words is "four million, seven hundred seventy-eight thousand, eight hundred thirty-one".