247099 has 2 divisors, whose sum is σ = 247100. Its totient is φ = 247098.

The previous prime is 247087. The next prime is 247141. The reversal of 247099 is 990742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247099 - 2⁵ = 247067 is a prime.

It is a super-2 number, since 2×247099² = 122115831602, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 247099.

It is not a weakly prime, because it can be changed into another prime (247069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123549 + 123550.

It is an arithmetic number, because the mean of its divisors is an integer number (123550).

247099 is a Friedman number, since it can be written as 497^2+90, using all its digits and the basic arithmetic operations.

2²⁴⁷⁰⁹⁹ is an apocalyptic number.

247099 is a deficient number, since it is larger than the sum of its proper divisors (1).

247099 is an equidigital number, since it uses as much as digits as its factorization.

247099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 247099 is about 497.0905350135. The cubic root of 247099 is about 62.7514351296.

The spelling of 247099 in words is "two hundred forty-seven thousand, ninety-nine".