79278763 has 4 divisors (see below), whose sum is σ = 79413048. Its totient is φ = 79144480.

The previous prime is 79278757. The next prime is 79278809. The reversal of 79278763 is 36787297.

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-79278763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79278733) 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, 66253 + ... + 67438.

It is an arithmetic number, because the mean of its divisors is an integer number (19853262).

Almost surely, 2^79278763 is an apocalyptic number.

79278763 is a deficient number, since it is larger than the sum of its proper divisors (134285).

79278763 is a wasteful number, since it uses less digits than its factorization.

79278763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134284.

The product of its digits is 889056, while the sum is 49.

The square root of 79278763 is about 8903.8622518545. The cubic root of 79278763 is about 429.5881454023.

The spelling of 79278763 in words is "seventy-nine million, two hundred seventy-eight thousand, seven hundred sixty-three".