91282791 has 8 divisors (see below), whose sum is σ = 127002240. Its totient is φ = 58209272.

The previous prime is 91282781. The next prime is 91282799. The reversal of 91282791 is 19728219.

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 91282791 - 2⁵ = 91282759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91282799) 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, 661401 + ... + 661538.

It is an arithmetic number, because the mean of its divisors is an integer number (15875280).

Almost surely, 2^91282791 is an apocalyptic number.

91282791 is a deficient number, since it is larger than the sum of its proper divisors (35719449).

91282791 is a wasteful number, since it uses less digits than its factorization.

91282791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322965.

The product of its digits is 18144, while the sum is 39.

The square root of 91282791 is about 9554.2027924888. The cubic root of 91282791 is about 450.2595884957.

The spelling of 91282791 in words is "ninety-one million, two hundred eighty-two thousand, seven hundred ninety-one".