247439241 has 72 divisors (see below), whose sum is σ = 435394752. Its totient is φ = 132580800.

The previous prime is 247439209. The next prime is 247439249. The reversal of 247439241 is 142934742.

It is not a de Polignac number, because 247439241 - 2⁵ = 247439209 is a prime.

It is a super-2 number, since 2×247439241² = 122452355973312162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247439196 and 247439205.

It is not an unprimeable number, because it can be changed into a prime (247439249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3693090 + ... + 3693156.

Almost surely, 2^247439241 is an apocalyptic number.

247439241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

247439241 is a deficient number, since it is larger than the sum of its proper divisors (187955511).

247439241 is a wasteful number, since it uses less digits than its factorization.

247439241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 169 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 247439241 is about 15730.2015562421. The cubic root of 247439241 is about 627.8022361653.

The spelling of 247439241 in words is "two hundred forty-seven million, four hundred thirty-nine thousand, two hundred forty-one".