91022289 has 8 divisors (see below), whose sum is σ = 121504032. Its totient is φ = 60611040.

The previous prime is 91022273. The next prime is 91022333. The reversal of 91022289 is 98222019.

It is a happy number.

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

It is not a de Polignac number, because 91022289 - 2⁴ = 91022273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91022209) 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, 14532 + ... + 19829.

It is an arithmetic number, because the mean of its divisors is an integer number (15188004).

Almost surely, 2^91022289 is an apocalyptic number.

It is an amenable number.

91022289 is a deficient number, since it is larger than the sum of its proper divisors (30481743).

91022289 is a wasteful number, since it uses less digits than its factorization.

91022289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35247.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 91022289 is about 9540.5602036778. The cubic root of 91022289 is about 449.8308648326.

The spelling of 91022289 in words is "ninety-one million, twenty-two thousand, two hundred eighty-nine".