91470 has 16 divisors (see below), whose sum is σ = 219600. Its totient is φ = 24384.

The previous prime is 91463. The next prime is 91493. The reversal of 91470 is 7419.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91470.

It is an unprimeable number.

91470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495 + ... + 1554.

It is an arithmetic number, because the mean of its divisors is an integer number (13725).

2⁹¹⁴⁷⁰ is an apocalyptic number.

91470 is an abundant number, since it is smaller than the sum of its proper divisors (128130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109800).

91470 is a wasteful number, since it uses less digits than its factorization.

91470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 91470 is about 302.4400767094. The cubic root of 91470 is about 45.0567186045.

Adding to 91470 its reverse (7419), we get a palindrome (98889).

It can be divided in two parts, 91 and 470, that added together give a triangular number (561 = T₃₃).

The spelling of 91470 in words is "ninety-one thousand, four hundred seventy".