91027967 has 8 divisors (see below), whose sum is σ = 92183520. Its totient is φ = 89877600.

The previous prime is 91027957. The next prime is 91027991. The reversal of 91027967 is 76972019.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91027967 - 2²⁴ = 74250751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91027907) 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, 43313 + ... + 45365.

It is an arithmetic number, because the mean of its divisors is an integer number (11522940).

Almost surely, 2^91027967 is an apocalyptic number.

91027967 is a deficient number, since it is larger than the sum of its proper divisors (1155553).

91027967 is a wasteful number, since it uses less digits than its factorization.

91027967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 91027967 is about 9540.8577706619. The cubic root of 91027967 is about 449.8402181700.

The spelling of 91027967 in words is "ninety-one million, twenty-seven thousand, nine hundred sixty-seven".