91889422 has 8 divisors (see below), whose sum is σ = 137875176. Its totient is φ = 45931032.

The previous prime is 91889419. The next prime is 91889443. The reversal of 91889422 is 22498819.

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

It is a super-4 number, since 4×91889422⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7968 + ... + 15724.

It is an arithmetic number, because the mean of its divisors is an integer number (17234397).

Almost surely, 2^91889422 is an apocalyptic number.

91889422 is a deficient number, since it is larger than the sum of its proper divisors (45985754).

91889422 is a wasteful number, since it uses less digits than its factorization.

91889422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13682.

The product of its digits is 82944, while the sum is 43.

The square root of 91889422 is about 9585.8970367932. The cubic root of 91889422 is about 451.2548055954.

The spelling of 91889422 in words is "ninety-one million, eight hundred eighty-nine thousand, four hundred twenty-two".