4478779 has 2 divisors, whose sum is σ = 4478780. Its totient is φ = 4478778.

The previous prime is 4478777. The next prime is 4478783. The reversal of 4478779 is 9778744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4478779 - 2¹ = 4478777 is a prime.

It is a super-2 number, since 2×4478779² = 40118922661682, which contains 22 as substring.

Together with 4478777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4478777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239389 + 2239390.

It is an arithmetic number, because the mean of its divisors is an integer number (2239390).

Almost surely, 2^4478779 is an apocalyptic number.

4478779 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478779 is an equidigital number, since it uses as much as digits as its factorization.

4478779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The square root of 4478779 is about 2116.3125950577. The cubic root of 4478779 is about 164.8364341751.

The spelling of 4478779 in words is "four million, four hundred seventy-eight thousand, seven hundred seventy-nine".