1223969039 has 2 divisors, whose sum is σ = 1223969040. Its totient is φ = 1223969038.

The previous prime is 1223969003. The next prime is 1223969053. The reversal of 1223969039 is 9309693221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223969039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223969069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611984519 + 611984520.

It is an arithmetic number, because the mean of its divisors is an integer number (611984520).

Almost surely, 2^1223969039 is an apocalyptic number.

1223969039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223969039 is an equidigital number, since it uses as much as digits as its factorization.

1223969039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 1223969039 is about 34985.2688856324. The cubic root of 1223969039 is about 1069.6872288729.

The spelling of 1223969039 in words is "one billion, two hundred twenty-three million, nine hundred sixty-nine thousand, thirty-nine".