247476797 has 2 divisors, whose sum is σ = 247476798. Its totient is φ = 247476796.

The previous prime is 247476781. The next prime is 247476809. The reversal of 247476797 is 797674742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127486681 + 119990116 = 11291^2 + 10954^2 .

It is a cyclic number.

It is not a de Polignac number, because 247476797 - 2⁴ = 247476781 is a prime.

It is a super-2 number, since 2×247476797² = 122489530106758418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247476727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123738398 + 123738399.

It is an arithmetic number, because the mean of its divisors is an integer number (123738399).

Almost surely, 2^247476797 is an apocalyptic number.

It is an amenable number.

247476797 is a deficient number, since it is larger than the sum of its proper divisors (1).

247476797 is an equidigital number, since it uses as much as digits as its factorization.

247476797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4148928, while the sum is 53.

The square root of 247476797 is about 15731.3952655192. The cubic root of 247476797 is about 627.8339968889.

The spelling of 247476797 in words is "two hundred forty-seven million, four hundred seventy-six thousand, seven hundred ninety-seven".