779074947449 has 4 divisors (see below), whose sum is σ = 780257155920. Its totient is φ = 777892738980.

The previous prime is 779074947437. The next prime is 779074947451. The reversal of 779074947449 is 944749470977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 779074947449 - 2²⁰ = 779073898873 is a prime.

It is a super-2 number, since 2×779074947449² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (779074947949) 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, 591103247 + ... + 591104564.

It is an arithmetic number, because the mean of its divisors is an integer number (195064288980).

Almost surely, 2^779074947449 is an apocalyptic number.

It is an amenable number.

779074947449 is a deficient number, since it is larger than the sum of its proper divisors (1182208471).

779074947449 is a wasteful number, since it uses less digits than its factorization.

779074947449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182208470.

The product of its (nonzero) digits is 448084224, while the sum is 71.

The spelling of 779074947449 in words is "seven hundred seventy-nine billion, seventy-four million, nine hundred forty-seven thousand, four hundred forty-nine".