1296472039 has 4 divisors (see below), whose sum is σ = 1296569824. Its totient is φ = 1296374256.

The previous prime is 1296472013. The next prime is 1296472063. The reversal of 1296472039 is 9302746921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1296472039 - 2¹⁵ = 1296439271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1296471986 and 1296472004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296472069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25167 + ... + 56800.

It is an arithmetic number, because the mean of its divisors is an integer number (324142456).

Almost surely, 2^1296472039 is an apocalyptic number.

1296472039 is a deficient number, since it is larger than the sum of its proper divisors (97785).

1296472039 is an equidigital number, since it uses as much as digits as its factorization.

1296472039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97784.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1296472039 is about 36006.5555003530. Note that the first 4 decimals coincide. The cubic root of 1296472039 is about 1090.4047087347.

The spelling of 1296472039 in words is "one billion, two hundred ninety-six million, four hundred seventy-two thousand, thirty-nine".