91460609 has 4 divisors (see below), whose sum is σ = 91488516. Its totient is φ = 91432704.

The previous prime is 91460573. The next prime is 91460639. The reversal of 91460609 is 90606419.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37761025 + 53699584 = 6145^2 + 7328^2 .

It is a cyclic number.

It is not a de Polignac number, because 91460609 - 2¹² = 91456513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91460639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8264 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (22872129).

Almost surely, 2^91460609 is an apocalyptic number.

It is an amenable number.

91460609 is a deficient number, since it is larger than the sum of its proper divisors (27907).

91460609 is a wasteful number, since it uses less digits than its factorization.

91460609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27906.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 91460609 is about 9563.5040126514. The cubic root of 91460609 is about 450.5517659759.

The spelling of 91460609 in words is "ninety-one million, four hundred sixty thousand, six hundred nine".