4478420369 has 2 divisors, whose sum is σ = 4478420370. Its totient is φ = 4478420368.

The previous prime is 4478420291. The next prime is 4478420371. The reversal of 4478420369 is 9630248744.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3722830225 + 755590144 = 61015^2 + 27488^2 .

It is a cyclic number.

It is not a de Polignac number, because 4478420369 - 2⁸ = 4478420113 is a prime.

It is a super-2 number, since 2×4478420369² = 40112498002948192322, which contains 22 as substring.

Together with 4478420371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4478420389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239210184 + 2239210185.

It is an arithmetic number, because the mean of its divisors is an integer number (2239210185).

Almost surely, 2^4478420369 is an apocalyptic number.

It is an amenable number.

4478420369 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478420369 is an equidigital number, since it uses as much as digits as its factorization.

4478420369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 4478420369 is about 66921.0009563515. Note that the first 3 decimals coincide. The cubic root of 4478420369 is about 1648.3203438724.

The spelling of 4478420369 in words is "four billion, four hundred seventy-eight million, four hundred twenty thousand, three hundred sixty-nine".