91144041 has 8 divisors (see below), whose sum is σ = 121605120. Its totient is φ = 60722832.

The previous prime is 91144037. The next prime is 91144051. The reversal of 91144041 is 14044119.

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

It is not a de Polignac number, because 91144041 - 2² = 91144037 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91144051) 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, 4146 + ... + 14123.

It is an arithmetic number, because the mean of its divisors is an integer number (15200640).

Almost surely, 2^91144041 is an apocalyptic number.

It is an amenable number.

91144041 is a deficient number, since it is larger than the sum of its proper divisors (30461079).

91144041 is a wasteful number, since it uses less digits than its factorization.

91144041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19935.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 91144041 is about 9546.9388287555. The cubic root of 91144041 is about 450.0313410270.

The spelling of 91144041 in words is "ninety-one million, one hundred forty-four thousand, forty-one".