79228913449 has 12 divisors (see below), whose sum is σ = 92184557124. Its totient is φ = 67895531424.

The previous prime is 79228913429. The next prime is 79228913497. The reversal of 79228913449 is 94431982297.

It can be written as a sum of positive squares in 2 ways, for example, as 4129347600 + 75099565849 = 64260^2 + 274043^2 .

It is not a de Polignac number, because 79228913449 - 2¹¹ = 79228911401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79228913393 and 79228913402.

It is not an unprimeable number, because it can be changed into a prime (79228913429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49387 + ... + 401119.

It is an arithmetic number, because the mean of its divisors is an integer number (7682046427).

Almost surely, 2^79228913449 is an apocalyptic number.

It is an amenable number.

79228913449 is a deficient number, since it is larger than the sum of its proper divisors (12955643675).

79228913449 is a wasteful number, since it uses less digits than its factorization.

79228913449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356344 (or 356337 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 79228913449 in words is "seventy-nine billion, two hundred twenty-eight million, nine hundred thirteen thousand, four hundred forty-nine".