1239023039 has 2 divisors, whose sum is σ = 1239023040. Its totient is φ = 1239023038.

The previous prime is 1239022991. The next prime is 1239023047. The reversal of 1239023039 is 9303209321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1239023039 - 2⁸ = 1239022783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1239022996 and 1239023014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1239023089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619511519 + 619511520.

It is an arithmetic number, because the mean of its divisors is an integer number (619511520).

Almost surely, 2^1239023039 is an apocalyptic number.

1239023039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239023039 is an equidigital number, since it uses as much as digits as its factorization.

1239023039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 1239023039 is about 35199.7590758801. The cubic root of 1239023039 is about 1074.0548502400.

The spelling of 1239023039 in words is "one billion, two hundred thirty-nine million, twenty-three thousand, thirty-nine".