91427449 has 8 divisors (see below), whose sum is σ = 96343040. Its totient is φ = 86522256.

The previous prime is 91427437. The next prime is 91427519. The reversal of 91427449 is 94472419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91427449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91427419) 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, 21064 + ... + 25030.

It is an arithmetic number, because the mean of its divisors is an integer number (12042880).

Almost surely, 2^91427449 is an apocalyptic number.

It is an amenable number.

91427449 is a deficient number, since it is larger than the sum of its proper divisors (4915591).

91427449 is a wasteful number, since it uses less digits than its factorization.

91427449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199.

The product of its digits is 72576, while the sum is 40.

The square root of 91427449 is about 9561.7701813001. The cubic root of 91427449 is about 450.4973086429.

The spelling of 91427449 in words is "ninety-one million, four hundred twenty-seven thousand, four hundred forty-nine".