91830441 has 4 divisors (see below), whose sum is σ = 122440592. Its totient is φ = 61220292.

The previous prime is 91830419. The next prime is 91830449. The reversal of 91830441 is 14403819.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91830441 - 2⁷ = 91830313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91830399 and 91830408.

It is not an unprimeable number, because it can be changed into a prime (91830449) 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, 15305071 + ... + 15305076.

It is an arithmetic number, because the mean of its divisors is an integer number (30610148).

Almost surely, 2^91830441 is an apocalyptic number.

It is an amenable number.

91830441 is a deficient number, since it is larger than the sum of its proper divisors (30610151).

91830441 is a wasteful number, since it uses less digits than its factorization.

91830441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610150.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 91830441 is about 9582.8200964017. The cubic root of 91830441 is about 451.1582360604.

The spelling of 91830441 in words is "ninety-one million, eight hundred thirty thousand, four hundred forty-one".