91426 has 8 divisors (see below), whose sum is σ = 145260. Its totient is φ = 43008.

The previous prime is 91423. The next prime is 91433. The reversal of 91426 is 62419.

91426 = T₁₄ + T₁₅ + ... + T₈₁.

It can be written as a sum of positive squares in 2 ways, for example, as 89401 + 2025 = 299^2 + 45^2 .

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

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 91397 and 91406.

It is not an unprimeable number, because it can be changed into a prime (91423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311 + ... + 1378.

2⁹¹⁴²⁶ is an apocalyptic number.

91426 is a deficient number, since it is larger than the sum of its proper divisors (53834).

91426 is a wasteful number, since it uses less digits than its factorization.

91426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its digits is 432, while the sum is 22.

The square root of 91426 is about 302.3673262772. The cubic root of 91426 is about 45.0494928708.

The spelling of 91426 in words is "ninety-one thousand, four hundred twenty-six".