1291104407 has 2 divisors, whose sum is σ = 1291104408. Its totient is φ = 1291104406.

The previous prime is 1291104403. The next prime is 1291104421. The reversal of 1291104407 is 7044011921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1291104407 - 2² = 1291104403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1291104407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291104401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645552203 + 645552204.

It is an arithmetic number, because the mean of its divisors is an integer number (645552204).

Almost surely, 2^1291104407 is an apocalyptic number.

1291104407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291104407 is an equidigital number, since it uses as much as digits as its factorization.

1291104407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1291104407 is about 35931.9413196671. The cubic root of 1291104407 is about 1088.8978020400.

The spelling of 1291104407 in words is "one billion, two hundred ninety-one million, one hundred four thousand, four hundred seven".