4217719249 has 2 divisors, whose sum is σ = 4217719250. Its totient is φ = 4217719248.

The previous prime is 4217719223. The next prime is 4217719307. The reversal of 4217719249 is 9429177124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3770819649 + 446899600 = 61407^2 + 21140^2 .

It is a cyclic number.

It is not a de Polignac number, because 4217719249 - 2²¹ = 4215622097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4217719199 and 4217719208.

It is not a weakly prime, because it can be changed into another prime (4217719049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108859624 + 2108859625.

It is an arithmetic number, because the mean of its divisors is an integer number (2108859625).

Almost surely, 2^4217719249 is an apocalyptic number.

It is an amenable number.

4217719249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4217719249 is an equidigital number, since it uses as much as digits as its factorization.

4217719249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 4217719249 is about 64943.9700742109. The cubic root of 4217719249 is about 1615.6944106147.

The spelling of 4217719249 in words is "four billion, two hundred seventeen million, seven hundred nineteen thousand, two hundred forty-nine".