479779229 has 2 divisors, whose sum is σ = 479779230. Its totient is φ = 479779228.

The previous prime is 479779217. The next prime is 479779271. The reversal of 479779229 is 922977974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397005625 + 82773604 = 19925^2 + 9098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479779229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479775229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239889614 + 239889615.

It is an arithmetic number, because the mean of its divisors is an integer number (239889615).

Almost surely, 2^479779229 is an apocalyptic number.

It is an amenable number.

479779229 is a deficient number, since it is larger than the sum of its proper divisors (1).

479779229 is an equidigital number, since it uses as much as digits as its factorization.

479779229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 56.

The square root of 479779229 is about 21903.8633350375. The cubic root of 479779229 is about 782.8534696525.

The spelling of 479779229 in words is "four hundred seventy-nine million, seven hundred seventy-nine thousand, two hundred twenty-nine".