2479797569 has 4 divisors (see below), whose sum is σ = 2565307860. Its totient is φ = 2394287280.

The previous prime is 2479797493. The next prime is 2479797577. The reversal of 2479797569 is 9657979742.

2479797569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1512276544 + 967521025 = 38888^2 + 31105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2479797569 - 2¹² = 2479793473 is a prime.

It is a super-2 number, since 2×2479797569² = 12298791966436619522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2479797169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42755102 + ... + 42755159.

It is an arithmetic number, because the mean of its divisors is an integer number (641326965).

Almost surely, 2^2479797569 is an apocalyptic number.

2479797569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2479797569 is a deficient number, since it is larger than the sum of its proper divisors (85510291).

2479797569 is an equidigital number, since it uses as much as digits as its factorization.

2479797569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85510290.

The product of its digits is 60011280, while the sum is 65.

The square root of 2479797569 is about 49797.5658943286. The cubic root of 2479797569 is about 1353.5430605845.

The spelling of 2479797569 in words is "two billion, four hundred seventy-nine million, seven hundred ninety-seven thousand, five hundred sixty-nine".