247860479 has 2 divisors, whose sum is σ = 247860480. Its totient is φ = 247860478.

The previous prime is 247860463. The next prime is 247860517. The reversal of 247860479 is 974068742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247860479 - 2⁴ = 247860463 is a prime.

It is a super-2 number, since 2×247860479² = 122869634100218882, 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 (247860449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123930239 + 123930240.

It is an arithmetic number, because the mean of its divisors is an integer number (123930240).

Almost surely, 2^247860479 is an apocalyptic number.

247860479 is a deficient number, since it is larger than the sum of its proper divisors (1).

247860479 is an equidigital number, since it uses as much as digits as its factorization.

247860479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 247860479 is about 15743.5853286346. The cubic root of 247860479 is about 628.1582888688.

The spelling of 247860479 in words is "two hundred forty-seven million, eight hundred sixty thousand, four hundred seventy-nine".