77341729 has 4 divisors (see below), whose sum is σ = 79432084. Its totient is φ = 75251376.

The previous prime is 77341699. The next prime is 77341739. The reversal of 77341729 is 92714377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92714377 = 7 ⋅13244911.

It can be written as a sum of positive squares in 2 ways, for example, as 39087504 + 38254225 = 6252^2 + 6185^2 .

It is a cyclic number.

It is not a de Polignac number, because 77341729 - 2⁷ = 77341601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77341691 and 77341700.

It is not an unprimeable number, because it can be changed into a prime (77341739) 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, 1045122 + ... + 1045195.

It is an arithmetic number, because the mean of its divisors is an integer number (19858021).

Almost surely, 2^77341729 is an apocalyptic number.

It is an amenable number.

77341729 is a deficient number, since it is larger than the sum of its proper divisors (2090355).

77341729 is a wasteful number, since it uses less digits than its factorization.

77341729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090354.

The product of its digits is 74088, while the sum is 40.

The square root of 77341729 is about 8794.4146479456. The cubic root of 77341729 is about 426.0605191486.

The spelling of 77341729 in words is "seventy-seven million, three hundred forty-one thousand, seven hundred twenty-nine".