91414481 has 4 divisors (see below), whose sum is σ = 92441700. Its totient is φ = 90387264.

The previous prime is 91414471. The next prime is 91414493. The reversal of 91414481 is 18441419.

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 16072081 + 75342400 = 4009^2 + 8680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91414481 is a prime.

It is a super-2 number, since 2×91414481² = 16713214672998722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91414441) 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 3 ways as a sum of consecutive naturals, for example, 513476 + ... + 513653.

It is an arithmetic number, because the mean of its divisors is an integer number (23110425).

Almost surely, 2^91414481 is an apocalyptic number.

It is an amenable number.

91414481 is a deficient number, since it is larger than the sum of its proper divisors (1027219).

91414481 is a wasteful number, since it uses less digits than its factorization.

91414481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027218.

The product of its digits is 4608, while the sum is 32.

The square root of 91414481 is about 9561.0920401385. The cubic root of 91414481 is about 450.4760082370.

The spelling of 91414481 in words is "ninety-one million, four hundred fourteen thousand, four hundred eighty-one".