91599468 has 48 divisors (see below), whose sum is σ = 227261664. Its totient is φ = 28615680.

The previous prime is 91599467. The next prime is 91599493. The reversal of 91599468 is 86499519.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 91599468.

It is not an unprimeable number, because it can be changed into a prime (91599463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55698 + ... + 57318.

It is an arithmetic number, because the mean of its divisors is an integer number (4734618).

Almost surely, 2^91599468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91599468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113630832).

91599468 is an abundant number, since it is smaller than the sum of its proper divisors (135662196).

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

91599468 is a wasteful number, since it uses less digits than its factorization.

91599468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1920 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 91599468 is about 9570.7610982617. The cubic root of 91599468 is about 450.7796656626.

Adding to 91599468 its sum of digits (51), we get a palindrome (91599519).

The spelling of 91599468 in words is "ninety-one million, five hundred ninety-nine thousand, four hundred sixty-eight".