79583947 has 2 divisors, whose sum is σ = 79583948. Its totient is φ = 79583946.

The previous prime is 79583909. The next prime is 79583957. The reversal of 79583947 is 74938597.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79583947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79583894 and 79583903.

It is not a weakly prime, because it can be changed into another prime (79583957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39791973 + 39791974.

It is an arithmetic number, because the mean of its divisors is an integer number (39791974).

Almost surely, 2^79583947 is an apocalyptic number.

79583947 is a deficient number, since it is larger than the sum of its proper divisors (1).

79583947 is an equidigital number, since it uses as much as digits as its factorization.

79583947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 79583947 is about 8920.9835220115. The cubic root of 79583947 is about 430.1386734995.

The spelling of 79583947 in words is "seventy-nine million, five hundred eighty-three thousand, nine hundred forty-seven".