1296749 has 2 divisors, whose sum is σ = 1296750. Its totient is φ = 1296748.

The previous prime is 1296727. The next prime is 1296781. The reversal of 1296749 is 9476921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 126025 = 1082^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296749 - 2¹² = 1292653 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648374 + 648375.

It is an arithmetic number, because the mean of its divisors is an integer number (648375).

2^1296749 is an apocalyptic number.

It is an amenable number.

1296749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296749 is an equidigital number, since it uses as much as digits as its factorization.

1296749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 1296749 is about 1138.7488748622. The cubic root of 1296749 is about 109.0482349714.

The spelling of 1296749 in words is "one million, two hundred ninety-six thousand, seven hundred forty-nine".