979747 has 2 divisors, whose sum is σ = 979748. Its totient is φ = 979746.

The previous prime is 979717. The next prime is 979757. The reversal of 979747 is 747979.

It is a strong prime.

It is an emirp because it is prime and its reverse (747979) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979747 is a prime.

979747 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (979717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489873 + 489874.

It is an arithmetic number, because the mean of its divisors is an integer number (489874).

2⁹⁷⁹⁷⁴⁷ is an apocalyptic number.

979747 is a deficient number, since it is larger than the sum of its proper divisors (1).

979747 is an equidigital number, since it uses as much as digits as its factorization.

979747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 43.

The square root of 979747 is about 989.8217011159. The cubic root of 979747 is about 99.3202904165.

The spelling of 979747 in words is "nine hundred seventy-nine thousand, seven hundred forty-seven".