79423648249 has 8 divisors (see below), whose sum is σ = 86654617920. Its totient is φ = 72194451600.

The previous prime is 79423648223. The next prime is 79423648259. The reversal of 79423648249 is 94284632497.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79423648249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79423648193 and 79423648202.

It is not an unprimeable number, because it can be changed into a prime (79423648259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348709 + ... + 529570.

It is an arithmetic number, because the mean of its divisors is an integer number (10831827240).

Almost surely, 2^79423648249 is an apocalyptic number.

It is an amenable number.

79423648249 is a deficient number, since it is larger than the sum of its proper divisors (7230969671).

79423648249 is a wasteful number, since it uses less digits than its factorization.

79423648249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886511.

The product of its digits is 20901888, while the sum is 58.

The spelling of 79423648249 in words is "seventy-nine billion, four hundred twenty-three million, six hundred forty-eight thousand, two hundred forty-nine".