1223453279 has 2 divisors, whose sum is σ = 1223453280. Its totient is φ = 1223453278.

The previous prime is 1223453251. The next prime is 1223453281. The reversal of 1223453279 is 9723543221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223453279 - 2²⁴ = 1206676063 is a prime.

Together with 1223453281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223453239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611726639 + 611726640.

It is an arithmetic number, because the mean of its divisors is an integer number (611726640).

Almost surely, 2^1223453279 is an apocalyptic number.

1223453279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223453279 is an equidigital number, since it uses as much as digits as its factorization.

1223453279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 1223453279 is about 34977.8970065383. The cubic root of 1223453279 is about 1069.5369583518.

The spelling of 1223453279 in words is "one billion, two hundred twenty-three million, four hundred fifty-three thousand, two hundred seventy-nine".