247024447 has 2 divisors, whose sum is σ = 247024448. Its totient is φ = 247024446.

The previous prime is 247024417. The next prime is 247024457. The reversal of 247024447 is 744420742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247024447 is a prime.

It is a super-2 number, since 2×247024447² = 122042154831311618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247024417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123512223 + 123512224.

It is an arithmetic number, because the mean of its divisors is an integer number (123512224).

Almost surely, 2^247024447 is an apocalyptic number.

247024447 is a deficient number, since it is larger than the sum of its proper divisors (1).

247024447 is an equidigital number, since it uses as much as digits as its factorization.

247024447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 34.

The square root of 247024447 is about 15717.0113889378. The cubic root of 247024447 is about 627.4512351855.

The spelling of 247024447 in words is "two hundred forty-seven million, twenty-four thousand, four hundred forty-seven".