4778961 has 8 divisors (see below), whose sum is σ = 6951264. Its totient is φ = 2896320.

The previous prime is 4778953. The next prime is 4778981. The reversal of 4778961 is 1698774.

4778961 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4778961 - 2³ = 4778953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4778981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72376 + ... + 72441.

It is an arithmetic number, because the mean of its divisors is an integer number (868908).

Almost surely, 2^4778961 is an apocalyptic number.

It is an amenable number.

4778961 is a deficient number, since it is larger than the sum of its proper divisors (2172303).

4778961 is a wasteful number, since it uses less digits than its factorization.

4778961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144831.

The product of its digits is 84672, while the sum is 42.

The square root of 4778961 is about 2186.0834842247. The cubic root of 4778961 is about 168.4397140421.

The spelling of 4778961 in words is "four million, seven hundred seventy-eight thousand, nine hundred sixty-one".