247830249 has 4 divisors (see below), whose sum is σ = 330440336. Its totient is φ = 165220164.

The previous prime is 247830223. The next prime is 247830269. The reversal of 247830249 is 942038742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 247830249 - 2⁸ = 247829993 is a prime.

It is a super-2 number, since 2×247830249² = 122839664638804002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247830269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41305039 + ... + 41305044.

It is an arithmetic number, because the mean of its divisors is an integer number (82610084).

Almost surely, 2^247830249 is an apocalyptic number.

It is an amenable number.

247830249 is a deficient number, since it is larger than the sum of its proper divisors (82610087).

247830249 is an equidigital number, since it uses as much as digits as its factorization.

247830249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82610086.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 247830249 is about 15742.6252258002. The cubic root of 247830249 is about 628.1327503115.

The spelling of 247830249 in words is "two hundred forty-seven million, eight hundred thirty thousand, two hundred forty-nine".