91498901 has 8 divisors (see below), whose sum is σ = 98613144. Its totient is φ = 84395520.

The previous prime is 91498873. The next prime is 91498931. The reversal of 91498901 is 10989419.

It can be written as a sum of positive squares in 4 ways, for example, as 18054001 + 73444900 = 4249^2 + 8570^2 .

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 91498901 - 2⁶ = 91498837 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 (91498931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26465 + ... + 29721.

It is an arithmetic number, because the mean of its divisors is an integer number (12326643).

Almost surely, 2^91498901 is an apocalyptic number.

It is an amenable number.

91498901 is a deficient number, since it is larger than the sum of its proper divisors (7114243).

91498901 is a wasteful number, since it uses less digits than its factorization.

91498901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 91498901 is about 9565.5057890318. The cubic root of 91498901 is about 450.6146350122.

The spelling of 91498901 in words is "ninety-one million, four hundred ninety-eight thousand, nine hundred one".