1299457 has 2 divisors, whose sum is σ = 1299458. Its totient is φ = 1299456.

The previous prime is 1299451. The next prime is 1299491. The reversal of 1299457 is 7549921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 408321 = 944^2 + 639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299457 - 2³ = 1299449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649728 + 649729.

It is an arithmetic number, because the mean of its divisors is an integer number (649729).

2^1299457 is an apocalyptic number.

It is an amenable number.

1299457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299457 is an equidigital number, since it uses as much as digits as its factorization.

1299457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 1299457 is about 1139.9372789763. The cubic root of 1299457 is about 109.1240906429.

The spelling of 1299457 in words is "one million, two hundred ninety-nine thousand, four hundred fifty-seven".