91410440 has 64 divisors (see below), whose sum is σ = 226661760. Its totient is φ = 32901120.

The previous prime is 91410439. The next prime is 91410481. The reversal of 91410440 is 4401419.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44312 + ... + 46328.

It is an arithmetic number, because the mean of its divisors is an integer number (3541590).

Almost surely, 2^91410440 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 91410440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113330880).

91410440 is an abundant number, since it is smaller than the sum of its proper divisors (135251320).

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

91410440 is a wasteful number, since it uses less digits than its factorization.

91410440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 91410440 is about 9560.8807125704. The cubic root of 91410440 is about 450.4693703376.

Adding to 91410440 its reverse (4401419), we get a palindrome (95811859).

The spelling of 91410440 in words is "ninety-one million, four hundred ten thousand, four hundred forty".