91049617 has 8 divisors (see below), whose sum is σ = 95898816. Its totient is φ = 86274672.

The previous prime is 91049611. The next prime is 91049627. The reversal of 91049617 is 71694019.

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 91049617 - 2¹¹ = 91047569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91049611) 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, 16038 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (11987352).

Almost surely, 2^91049617 is an apocalyptic number.

It is an amenable number.

91049617 is a deficient number, since it is larger than the sum of its proper divisors (4849199).

91049617 is a wasteful number, since it uses less digits than its factorization.

91049617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37127.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 91049617 is about 9541.9922972092. The cubic root of 91049617 is about 449.8758785245.

It can be divided in two parts, 9104 and 9617, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 91049617 in words is "ninety-one million, forty-nine thousand, six hundred seventeen".