1296090841 has 4 divisors (see below), whose sum is σ = 1303852032. Its totient is φ = 1288329652.

The previous prime is 1296090839. The next prime is 1296090853. The reversal of 1296090841 is 1480906921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1296090841 - 2¹ = 1296090839 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1296090794 and 1296090803.

It is not an unprimeable number, because it can be changed into a prime (1296000841) 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, 3880345 + ... + 3880678.

It is an arithmetic number, because the mean of its divisors is an integer number (325963008).

Almost surely, 2^1296090841 is an apocalyptic number.

It is an amenable number.

1296090841 is a deficient number, since it is larger than the sum of its proper divisors (7761191).

1296090841 is an equidigital number, since it uses as much as digits as its factorization.

1296090841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7761190.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1296090841 is about 36001.2616584475. The cubic root of 1296090841 is about 1090.2978287232.

The spelling of 1296090841 in words is "one billion, two hundred ninety-six million, ninety thousand, eight hundred forty-one".