479748791569 has 2 divisors, whose sum is σ = 479748791570. Its totient is φ = 479748791568.

The previous prime is 479748791549. The next prime is 479748791579. The reversal of 479748791569 is 965197847974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373795286544 + 105953505025 = 611388^2 + 325505^2 .

It is a cyclic number.

It is not a de Polignac number, because 479748791569 - 2¹³ = 479748783377 is a prime.

It is a super-2 number, since 2×479748791569² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 479748791495 and 479748791504.

It is not a weakly prime, because it can be changed into another prime (479748791549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239874395784 + 239874395785.

It is an arithmetic number, because the mean of its divisors is an integer number (239874395785).

Almost surely, 2^479748791569 is an apocalyptic number.

It is an amenable number.

479748791569 is a deficient number, since it is larger than the sum of its proper divisors (1).

479748791569 is an equidigital number, since it uses as much as digits as its factorization.

479748791569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960180480, while the sum is 76.

The spelling of 479748791569 in words is "four hundred seventy-nine billion, seven hundred forty-eight million, seven hundred ninety-one thousand, five hundred sixty-nine".