247879 has 2 divisors, whose sum is σ = 247880. Its totient is φ = 247878.

The previous prime is 247873. The next prime is 247889. The reversal of 247879 is 978742.

It is a happy number.

247879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247879 - 2⁵ = 247847 is a prime.

It is a super-2 number, since 2×247879² = 122887997282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123939 + 123940.

It is an arithmetic number, because the mean of its divisors is an integer number (123940).

2²⁴⁷⁸⁷⁹ is an apocalyptic number.

247879 is a deficient number, since it is larger than the sum of its proper divisors (1).

247879 is an equidigital number, since it uses as much as digits as its factorization.

247879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 247879 is about 497.8744821740. The cubic root of 247879 is about 62.8173934539.

The spelling of 247879 in words is "two hundred forty-seven thousand, eight hundred seventy-nine".