4778903 has 4 divisors (see below), whose sum is σ = 4789128. Its totient is φ = 4768680.

The previous prime is 4778869. The next prime is 4778927. The reversal of 4778903 is 3098774.

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

It is a cyclic number.

It is not a de Polignac number, because 4778903 - 2²² = 584599 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 (4778933) 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 3 ways as a sum of consecutive naturals, for example, 4376 + ... + 5357.

It is an arithmetic number, because the mean of its divisors is an integer number (1197282).

Almost surely, 2^4778903 is an apocalyptic number.

4778903 is a deficient number, since it is larger than the sum of its proper divisors (10225).

4778903 is an equidigital number, since it uses as much as digits as its factorization.

4778903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10224.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 4778903 is about 2186.0702184514. The cubic root of 4778903 is about 168.4390326148.

The spelling of 4778903 in words is "four million, seven hundred seventy-eight thousand, nine hundred three".