1299377 has 2 divisors, whose sum is σ = 1299378. Its totient is φ = 1299376.

The previous prime is 1299367. The next prime is 1299379. The reversal of 1299377 is 7739921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 167281 = 1064^2 + 409^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299377 - 2¹⁴ = 1282993 is a prime.

Together with 1299379, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1299377.

It is not a weakly prime, because it can be changed into another prime (1299379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649688 + 649689.

It is an arithmetic number, because the mean of its divisors is an integer number (649689).

2^1299377 is an apocalyptic number.

It is an amenable number.

1299377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299377 is an equidigital number, since it uses as much as digits as its factorization.

1299377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 38.

The square root of 1299377 is about 1139.9021887864. The cubic root of 1299377 is about 109.1218512187.

The spelling of 1299377 in words is "one million, two hundred ninety-nine thousand, three hundred seventy-seven".