91014217 has 12 divisors (see below), whose sum is σ = 106387536. Its totient is φ = 77633640.

The previous prime is 91014179. The next prime is 91014223. The reversal of 91014217 is 71241019.

It is a de Polignac number, because none of the positive numbers 2^k-91014217 is a prime.

It is a super-2 number, since 2×91014217² = 16567175392246178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91014191 and 91014200.

It is not an unprimeable number, because it can be changed into a prime (91018217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5938 + ... + 14740.

It is an arithmetic number, because the mean of its divisors is an integer number (8865628).

Almost surely, 2^91014217 is an apocalyptic number.

It is an amenable number.

91014217 is a deficient number, since it is larger than the sum of its proper divisors (15373319).

91014217 is a wasteful number, since it uses less digits than its factorization.

91014217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028 (or 9021 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 91014217 is about 9540.1371583432. The cubic root of 91014217 is about 449.8175672029.

The spelling of 91014217 in words is "ninety-one million, fourteen thousand, two hundred seventeen".