79677049 has 4 divisors (see below), whose sum is σ = 79905700. Its totient is φ = 79448400.

The previous prime is 79677047. The next prime is 79677067. The reversal of 79677049 is 94077697.

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 50979600 + 28697449 = 7140^2 + 5357^2 .

It is a cyclic number.

It is not a de Polignac number, because 79677049 - 2¹ = 79677047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79676993 and 79677011.

It is not an unprimeable number, because it can be changed into a prime (79677043) 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 3 ways as a sum of consecutive naturals, for example, 113802 + ... + 114499.

It is an arithmetic number, because the mean of its divisors is an integer number (19976425).

Almost surely, 2^79677049 is an apocalyptic number.

It is an amenable number.

79677049 is a deficient number, since it is larger than the sum of its proper divisors (228651).

79677049 is a wasteful number, since it uses less digits than its factorization.

79677049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228650.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 79677049 is about 8926.2001433981. The cubic root of 79677049 is about 430.3063420059.

The spelling of 79677049 in words is "seventy-nine million, six hundred seventy-seven thousand, forty-nine".