9106440391 has 2 divisors, whose sum is σ = 9106440392. Its totient is φ = 9106440390.

The previous prime is 9106440383. The next prime is 9106440401. The reversal of 9106440391 is 1930446019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9106440391 - 2³ = 9106440383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9106440391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9106140391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4553220195 + 4553220196.

It is an arithmetic number, because the mean of its divisors is an integer number (4553220196).

Almost surely, 2^9106440391 is an apocalyptic number.

9106440391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9106440391 is an equidigital number, since it uses as much as digits as its factorization.

9106440391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 9106440391 is about 95427.6709922232. The cubic root of 9106440391 is about 2088.2518895256.

The spelling of 9106440391 in words is "nine billion, one hundred six million, four hundred forty thousand, three hundred ninety-one".