247216933 has 4 divisors (see below), whose sum is σ = 252966208. Its totient is φ = 241467660.

The previous prime is 247216927. The next prime is 247216979. The reversal of 247216933 is 339612742.

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 a cyclic number.

It is not a de Polignac number, because 247216933 - 2⁹ = 247216421 is a prime.

It is a super-2 number, since 2×247216933² = 122232423923852978, 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 = 247216892 and 247216901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247216913) 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, 2874573 + ... + 2874658.

It is an arithmetic number, because the mean of its divisors is an integer number (63241552).

Almost surely, 2^247216933 is an apocalyptic number.

It is an amenable number.

247216933 is a deficient number, since it is larger than the sum of its proper divisors (5749275).

247216933 is an equidigital number, since it uses as much as digits as its factorization.

247216933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749274.

The product of its digits is 54432, while the sum is 37.

The square root of 247216933 is about 15723.1336889311. The cubic root of 247216933 is about 627.6141667270.

The spelling of 247216933 in words is "two hundred forty-seven million, two hundred sixteen thousand, nine hundred thirty-three".