79118747 has 2 divisors, whose sum is σ = 79118748. Its totient is φ = 79118746.

The previous prime is 79118713. The next prime is 79118749. The reversal of 79118747 is 74781197.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74781197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79118747 - 2¹⁶ = 79053211 is a prime.

It is a super-2 number, since 2×79118747² = 12519552253700018, which contains 22 as substring.

Together with 79118749, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79118698 and 79118707.

It is not a weakly prime, because it can be changed into another prime (79118749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39559373 + 39559374.

It is an arithmetic number, because the mean of its divisors is an integer number (39559374).

Almost surely, 2^79118747 is an apocalyptic number.

79118747 is a deficient number, since it is larger than the sum of its proper divisors (1).

79118747 is an equidigital number, since it uses as much as digits as its factorization.

79118747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 44.

The square root of 79118747 is about 8894.8719496123. The cubic root of 79118747 is about 429.2989242840.

The spelling of 79118747 in words is "seventy-nine million, one hundred eighteen thousand, seven hundred forty-seven".