8729057 has 2 divisors, whose sum is σ = 8729058. Its totient is φ = 8729056.

The previous prime is 8729053. The next prime is 8729059. The reversal of 8729057 is 7509278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5058001 + 3671056 = 2249^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 8729057 - 2² = 8729053 is a prime.

It is a super-2 number, since 2×8729057² = 152392872218498, which contains 22 as substring.

Together with 8729059, it forms a pair of twin primes.

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 8729057.

It is not a weakly prime, because it can be changed into another prime (8729051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364528 + 4364529.

It is an arithmetic number, because the mean of its divisors is an integer number (4364529).

Almost surely, 2^8729057 is an apocalyptic number.

It is an amenable number.

8729057 is a deficient number, since it is larger than the sum of its proper divisors (1).

8729057 is an equidigital number, since it uses as much as digits as its factorization.

8729057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 8729057 is about 2954.4977576570. The cubic root of 8729057 is about 205.8997296914.

The spelling of 8729057 in words is "eight million, seven hundred twenty-nine thousand, fifty-seven".