1239299023 has 2 divisors, whose sum is σ = 1239299024. Its totient is φ = 1239299022.

The previous prime is 1239299011. The next prime is 1239299051. The reversal of 1239299023 is 3209929321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1239299023 - 2²¹ = 1237201871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1239293023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619649511 + 619649512.

It is an arithmetic number, because the mean of its divisors is an integer number (619649512).

Almost surely, 2^1239299023 is an apocalyptic number.

1239299023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239299023 is an equidigital number, since it uses as much as digits as its factorization.

1239299023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 1239299023 is about 35203.6791117065. The cubic root of 1239299023 is about 1074.1345904704.

The spelling of 1239299023 in words is "one billion, two hundred thirty-nine million, two hundred ninety-nine thousand, twenty-three".