849724297 has 2 divisors, whose sum is σ = 849724298. Its totient is φ = 849724296.

The previous prime is 849724261. The next prime is 849724363. The reversal of 849724297 is 792427948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480661776 + 369062521 = 21924^2 + 19211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849724297 is a prime.

It is not a weakly prime, because it can be changed into another prime (849724597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424862148 + 424862149.

It is an arithmetic number, because the mean of its divisors is an integer number (424862149).

Almost surely, 2^849724297 is an apocalyptic number.

It is an amenable number.

849724297 is a deficient number, since it is larger than the sum of its proper divisors (1).

849724297 is an equidigital number, since it uses as much as digits as its factorization.

849724297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 849724297 is about 29150.0308233113. The cubic root of 849724297 is about 947.1658085833.

The spelling of 849724297 in words is "eight hundred forty-nine million, seven hundred twenty-four thousand, two hundred ninety-seven".