4478780489 has 2 divisors, whose sum is σ = 4478780490. Its totient is φ = 4478780488.

The previous prime is 4478780443. The next prime is 4478780519. The reversal of 4478780489 is 9840878744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4462240000 + 16540489 = 66800^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 4478780489 - 2⁸ = 4478780233 is a prime.

It is not a weakly prime, because it can be changed into another prime (4478780419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239390244 + 2239390245.

It is an arithmetic number, because the mean of its divisors is an integer number (2239390245).

Almost surely, 2^4478780489 is an apocalyptic number.

It is an amenable number.

4478780489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478780489 is an equidigital number, since it uses as much as digits as its factorization.

4478780489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14450688, while the sum is 59.

The square root of 4478780489 is about 66923.6915374518. The cubic root of 4478780489 is about 1648.3645244214.

The spelling of 4478780489 in words is "four billion, four hundred seventy-eight million, seven hundred eighty thousand, four hundred eighty-nine".