4778091 has 12 divisors (see below), whose sum is σ = 6921720. Its totient is φ = 3176160.

The previous prime is 4778077. The next prime is 4778107. The reversal of 4778091 is 1908774.

It is not a de Polignac number, because 4778091 - 2⁶ = 4778027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4778021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4180 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (576810).

Almost surely, 2^4778091 is an apocalyptic number.

4778091 is a deficient number, since it is larger than the sum of its proper divisors (2143629).

4778091 is a wasteful number, since it uses less digits than its factorization.

4778091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 4778091 is about 2185.8844891714. The cubic root of 4778091 is about 168.4294920541.

The spelling of 4778091 in words is "four million, seven hundred seventy-eight thousand, ninety-one".