247427339 has 2 divisors, whose sum is σ = 247427340. Its totient is φ = 247427338.

The previous prime is 247427303. The next prime is 247427347. The reversal of 247427339 is 933724742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247427339 - 2¹² = 247423243 is a prime.

It is a super-2 number, since 2×247427339² = 122440576169241842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247427296 and 247427305.

It is not a weakly prime, because it can be changed into another prime (247427359) 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, 123713669 + 123713670.

It is an arithmetic number, because the mean of its divisors is an integer number (123713670).

Almost surely, 2^247427339 is an apocalyptic number.

247427339 is a deficient number, since it is larger than the sum of its proper divisors (1).

247427339 is an equidigital number, since it uses as much as digits as its factorization.

247427339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 41.

The square root of 247427339 is about 15729.8232348619. The cubic root of 247427339 is about 627.7921700955.

The spelling of 247427339 in words is "two hundred forty-seven million, four hundred twenty-seven thousand, three hundred thirty-nine".