247869 has 6 divisors (see below), whose sum is σ = 358046. Its totient is φ = 165240.

The previous prime is 247853. The next prime is 247873. The reversal of 247869 is 968742.

247869 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 45369 = 450^2 + 213^2 .

It is not a de Polignac number, because 247869 - 2⁴ = 247853 is a prime.

It is a super-2 number, since 2×247869² = 122878082322, which contains 22 as substring.

It is a Duffinian number.

247869 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13762 + ... + 13779.

2²⁴⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

247869 is a deficient number, since it is larger than the sum of its proper divisors (110177).

247869 is a wasteful number, since it uses less digits than its factorization.

247869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27547 (or 27544 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 247869 is about 497.8644393808. The cubic root of 247869 is about 62.8165487106.

The spelling of 247869 in words is "two hundred forty-seven thousand, eight hundred sixty-nine".