77795079 has 4 divisors (see below), whose sum is σ = 103726776. Its totient is φ = 51863384.

The previous prime is 77795071. The next prime is 77795093. The reversal of 77795079 is 97059777.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97059777 = 3 ⋅32353259.

It is a cyclic number.

It is not a de Polignac number, because 77795079 - 2³ = 77795071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77795071) 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, 12965844 + ... + 12965849.

It is an arithmetic number, because the mean of its divisors is an integer number (25931694).

Almost surely, 2^77795079 is an apocalyptic number.

77795079 is a deficient number, since it is larger than the sum of its proper divisors (25931697).

77795079 is a wasteful number, since it uses less digits than its factorization.

77795079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25931696.

The product of its (nonzero) digits is 972405, while the sum is 51.

The square root of 77795079 is about 8820.1518694408. The cubic root of 77795079 is about 426.8913701512.

The spelling of 77795079 in words is "seventy-seven million, seven hundred ninety-five thousand, seventy-nine".