1296671039 has 6 divisors (see below), whose sum is σ = 1377432864. Its totient is φ = 1220396000.

The previous prime is 1296671029. The next prime is 1296671053. The reversal of 1296671039 is 9301766921.

It is not a de Polignac number, because 1296671039 - 2⁸ = 1296670783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296671029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243087 + ... + 2243664.

It is an arithmetic number, because the mean of its divisors is an integer number (229572144).

Almost surely, 2^1296671039 is an apocalyptic number.

1296671039 is a deficient number, since it is larger than the sum of its proper divisors (80761825).

1296671039 is an equidigital number, since it uses as much as digits as its factorization.

1296671039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486785 (or 4486768 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 1296671039 is about 36009.3187800047. The cubic root of 1296671039 is about 1090.4604958835.

The spelling of 1296671039 in words is "one billion, two hundred ninety-six million, six hundred seventy-one thousand, thirty-nine".