91044454309 has 8 divisors (see below), whose sum is σ = 91773527040. Its totient is φ = 90315572256.

The previous prime is 91044454297. The next prime is 91044454321. The reversal of 91044454309 is 90345444019.

It is an interprime number because it is at equal distance from previous prime (91044454297) and next prime (91044454321).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91044454309 - 2⁷ = 91044454181 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 (91044454339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003377 + ... + 1090345.

It is an arithmetic number, because the mean of its divisors is an integer number (11471690880).

Almost surely, 2^91044454309 is an apocalyptic number.

It is an amenable number.

91044454309 is a deficient number, since it is larger than the sum of its proper divisors (729072731).

91044454309 is a wasteful number, since it uses less digits than its factorization.

91044454309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95339.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 91044454309 in words is "ninety-one billion, forty-four million, four hundred fifty-four thousand, three hundred nine".