247484197 has 2 divisors, whose sum is σ = 247484198. Its totient is φ = 247484196.

The previous prime is 247484179. The next prime is 247484207. The reversal of 247484197 is 791484742.

Together with previous prime (247484179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172817316 + 74666881 = 13146^2 + 8641^2 .

It is a cyclic number.

It is not a de Polignac number, because 247484197 - 2¹⁵ = 247451429 is a prime.

It is a super-2 number, since 2×247484197² = 122496855529469618, 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 (247404197) 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, 123742098 + 123742099.

It is an arithmetic number, because the mean of its divisors is an integer number (123742099).

Almost surely, 2^247484197 is an apocalyptic number.

It is an amenable number.

247484197 is a deficient number, since it is larger than the sum of its proper divisors (1).

247484197 is an equidigital number, since it uses as much as digits as its factorization.

247484197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The square root of 247484197 is about 15731.6304622248. The cubic root of 247484197 is about 627.8402546140.

The spelling of 247484197 in words is "two hundred forty-seven million, four hundred eighty-four thousand, one hundred ninety-seven".