1299223 has 2 divisors, whose sum is σ = 1299224. Its totient is φ = 1299222.

The previous prime is 1299211. The next prime is 1299227. The reversal of 1299223 is 3229921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1299223 - 2¹⁷ = 1168151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1299191 and 1299200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649611 + 649612.

It is an arithmetic number, because the mean of its divisors is an integer number (649612).

2^1299223 is an apocalyptic number.

1299223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299223 is an equidigital number, since it uses as much as digits as its factorization.

1299223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 1299223 is about 1139.8346371294. The cubic root of 1299223 is about 109.1175400683.

It can be divided in two parts, 12 and 99223, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 1299223 in words is "one million, two hundred ninety-nine thousand, two hundred twenty-three".