77809341 has 4 divisors (see below), whose sum is σ = 103745792. Its totient is φ = 51872892.

The previous prime is 77809337. The next prime is 77809363. The reversal of 77809341 is 14390877.

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 not a de Polignac number, because 77809341 - 2² = 77809337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77809341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77809321) 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, 12968221 + ... + 12968226.

It is an arithmetic number, because the mean of its divisors is an integer number (25936448).

Almost surely, 2^77809341 is an apocalyptic number.

It is an amenable number.

77809341 is a deficient number, since it is larger than the sum of its proper divisors (25936451).

77809341 is a wasteful number, since it uses less digits than its factorization.

77809341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936450.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 77809341 is about 8820.9603218697. The cubic root of 77809341 is about 426.9174555746.

The spelling of 77809341 in words is "seventy-seven million, eight hundred nine thousand, three hundred forty-one".