78796799 has 4 divisors (see below), whose sum is σ = 81513960. Its totient is φ = 76079640.

The previous prime is 78796789. The next prime is 78796807. The reversal of 78796799 is 99769787.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78796799 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78796759) 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, 1358537 + ... + 1358594.

It is an arithmetic number, because the mean of its divisors is an integer number (20378490).

Almost surely, 2^78796799 is an apocalyptic number.

78796799 is a deficient number, since it is larger than the sum of its proper divisors (2717161).

78796799 is a wasteful number, since it uses less digits than its factorization.

78796799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717160.

The product of its digits is 12002256, while the sum is 62.

The square root of 78796799 is about 8876.7561079484. The cubic root of 78796799 is about 428.7158352363.

The spelling of 78796799 in words is "seventy-eight million, seven hundred ninety-six thousand, seven hundred ninety-nine".