91454193 has 6 divisors (see below), whose sum is σ = 132100514. Its totient is φ = 60969456.

The previous prime is 91454191. The next prime is 91454243. The reversal of 91454193 is 39145419.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70358544 + 21095649 = 8388^2 + 4593^2 .

It is not a de Polignac number, because 91454193 - 2¹ = 91454191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91454191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5080780 + ... + 5080797.

Almost surely, 2^91454193 is an apocalyptic number.

It is an amenable number.

91454193 is a deficient number, since it is larger than the sum of its proper divisors (40646321).

91454193 is a wasteful number, since it uses less digits than its factorization.

91454193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161583 (or 10161580 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 91454193 is about 9563.1685648638. The cubic root of 91454193 is about 450.5412302645.

The spelling of 91454193 in words is "ninety-one million, four hundred fifty-four thousand, one hundred ninety-three".