297645949 has 2 divisors, whose sum is σ = 297645950. Its totient is φ = 297645948.

The previous prime is 297645947. The next prime is 297645961. The reversal of 297645949 is 949546792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297321049 + 324900 = 17243^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 297645949 - 2¹ = 297645947 is a prime.

It is a super-2 number, since 2×297645949² = 177186221912221202, which contains 22 as substring.

Together with 297645947, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 297645949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297645947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148822974 + 148822975.

It is an arithmetic number, because the mean of its divisors is an integer number (148822975).

Almost surely, 2^297645949 is an apocalyptic number.

It is an amenable number.

297645949 is a deficient number, since it is larger than the sum of its proper divisors (1).

297645949 is an equidigital number, since it uses as much as digits as its factorization.

297645949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 55.

The square root of 297645949 is about 17252.4186420339. The cubic root of 297645949 is about 667.6773731288.

The spelling of 297645949 in words is "two hundred ninety-seven million, six hundred forty-five thousand, nine hundred forty-nine".