247470929 has 2 divisors, whose sum is σ = 247470930. Its totient is φ = 247470928.

The previous prime is 247470917. The next prime is 247470941. The reversal of 247470929 is 929074742.

It is a balanced prime because it is at equal distance from previous prime (247470917) and next prime (247470941).

It can be written as a sum of positive squares in only one way, i.e., 158130625 + 89340304 = 12575^2 + 9452^2 .

It is a cyclic number.

It is not a de Polignac number, because 247470929 - 2⁴ = 247470913 is a prime.

It is a super-2 number, since 2×247470929² = 122483721400246082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 247470929.

It is not a weakly prime, because it can be changed into another prime (247470029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123735464 + 123735465.

It is an arithmetic number, because the mean of its divisors is an integer number (123735465).

Almost surely, 2^247470929 is an apocalyptic number.

It is an amenable number.

247470929 is a deficient number, since it is larger than the sum of its proper divisors (1).

247470929 is an equidigital number, since it uses as much as digits as its factorization.

247470929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 247470929 is about 15731.2087583885. The cubic root of 247470929 is about 627.8290345934.

The spelling of 247470929 in words is "two hundred forty-seven million, four hundred seventy thousand, nine hundred twenty-nine".