247806229 has 12 divisors (see below), whose sum is σ = 287175168. Its totient is φ = 212024000.

The previous prime is 247806203. The next prime is 247806239. The reversal of 247806229 is 922608742.

247806229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247806229 - 2⁵ = 247806197 is a prime.

It is a super-2 number, since 2×247806229² = 122815854262400882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247806191 and 247806200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247806239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35797 + ... + 42154.

It is an arithmetic number, because the mean of its divisors is an integer number (23931264).

Almost surely, 2^247806229 is an apocalyptic number.

It is an amenable number.

247806229 is a deficient number, since it is larger than the sum of its proper divisors (39368939).

247806229 is a wasteful number, since it uses less digits than its factorization.

247806229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77996 (or 77979 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 247806229 is about 15741.8623104130. The cubic root of 247806229 is about 628.1124565336.

The spelling of 247806229 in words is "two hundred forty-seven million, eight hundred six thousand, two hundred twenty-nine".