297428749 has 2 divisors, whose sum is σ = 297428750. Its totient is φ = 297428748.

The previous prime is 297428731. The next prime is 297428767. The reversal of 297428749 is 947824792.

It is a balanced prime because it is at equal distance from previous prime (297428731) and next prime (297428767).

It can be written as a sum of positive squares in only one way, i.e., 158306724 + 139122025 = 12582^2 + 11795^2 .

It is a cyclic number.

It is not a de Polignac number, because 297428749 - 2¹⁷ = 297297677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 297428696 and 297428705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297428779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148714374 + 148714375.

It is an arithmetic number, because the mean of its divisors is an integer number (148714375).

Almost surely, 2^297428749 is an apocalyptic number.

It is an amenable number.

297428749 is a deficient number, since it is larger than the sum of its proper divisors (1).

297428749 is an equidigital number, since it uses as much as digits as its factorization.

297428749 is an odious number, because the sum of its binary digits is odd.

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

The square root of 297428749 is about 17246.1227236733. The cubic root of 297428749 is about 667.5149264198.

The spelling of 297428749 in words is "two hundred ninety-seven million, four hundred twenty-eight thousand, seven hundred forty-nine".