4278779 has 4 divisors (see below), whose sum is σ = 4283184. Its totient is φ = 4274376.

The previous prime is 4278773. The next prime is 4278829. The reversal of 4278779 is 9778724.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4278779 - 2⁸ = 4278523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (1070796).

Almost surely, 2^4278779 is an apocalyptic number.

4278779 is a deficient number, since it is larger than the sum of its proper divisors (4405).

4278779 is a wasteful number, since it uses less digits than its factorization.

4278779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404.

The product of its digits is 197568, while the sum is 44.

The square root of 4278779 is about 2068.5209691951. The cubic root of 4278779 is about 162.3453866650.

Subtracting 4278779 from its reverse (9778724), we obtain a palindrome (5499945).

The spelling of 4278779 in words is "four million, two hundred seventy-eight thousand, seven hundred seventy-nine".