91450961 has 8 divisors (see below), whose sum is σ = 107887104. Its totient is φ = 75857760.

The previous prime is 91450907. The next prime is 91450963. The reversal of 91450961 is 16905419.

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 91450961 - 2⁶ = 91450897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91450963) 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, 210500 + ... + 210933.

It is an arithmetic number, because the mean of its divisors is an integer number (13485888).

Almost surely, 2^91450961 is an apocalyptic number.

It is an amenable number.

91450961 is a deficient number, since it is larger than the sum of its proper divisors (16436143).

91450961 is a wasteful number, since it uses less digits than its factorization.

91450961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421471.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 91450961 is about 9562.9995817212. Note that the first 3 decimals coincide. The cubic root of 91450961 is about 450.5359228118.

The spelling of 91450961 in words is "ninety-one million, four hundred fifty thousand, nine hundred sixty-one".