91418 has 8 divisors (see below), whose sum is σ = 140448. Its totient is φ = 44604.

The previous prime is 91411. The next prime is 91423. The reversal of 91418 is 81419.

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

It is a junction number, because it is equal to n+sod(n) for n = 91393 and 91402.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91418.

It is not an unprimeable number, because it can be changed into a prime (91411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446 + ... + 617.

It is an arithmetic number, because the mean of its divisors is an integer number (17556).

2⁹¹⁴¹⁸ is an apocalyptic number.

91418 is a deficient number, since it is larger than the sum of its proper divisors (49030).

91418 is a wasteful number, since it uses less digits than its factorization.

91418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its digits is 288, while the sum is 23.

The square root of 91418 is about 302.3540970452. The cubic root of 91418 is about 45.0481788520.

Subtracting from 91418 its reverse (81419), we obtain a palindrome (9999).

The spelling of 91418 in words is "ninety-one thousand, four hundred eighteen".