91940449 has 8 divisors (see below), whose sum is σ = 99395840. Its totient is φ = 84746736.

The previous prime is 91940417. The next prime is 91940479. The reversal of 91940449 is 94404919.

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 91940449 - 2⁵ = 91940417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91940479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64689 + ... + 66094.

It is an arithmetic number, because the mean of its divisors is an integer number (12424480).

Almost surely, 2^91940449 is an apocalyptic number.

It is an amenable number.

91940449 is a deficient number, since it is larger than the sum of its proper divisors (7455391).

91940449 is a wasteful number, since it uses less digits than its factorization.

91940449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130839.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 91940449 is about 9588.5582336449. The cubic root of 91940449 is about 451.3383187193.

It can be divided in two parts, 9 and 1940449, that multiplied together give a square (17464041 = 4179²).

The spelling of 91940449 in words is "ninety-one million, nine hundred forty thousand, four hundred forty-nine".