91140460 has 24 divisors (see below), whose sum is σ = 193188240. Its totient is φ = 36114624.

The previous prime is 91140457. The next prime is 91140463. The reversal of 91140460 is 6404119.

It is an interprime number because it is at equal distance from previous prime (91140457) and next prime (91140463).

It is not an unprimeable number, because it can be changed into a prime (91140463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19155 + ... + 23434.

It is an arithmetic number, because the mean of its divisors is an integer number (8049510).

Almost surely, 2^91140460 is an apocalyptic number.

It is an amenable number.

91140460 is an abundant number, since it is smaller than the sum of its proper divisors (102047780).

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

91140460 is a wasteful number, since it uses less digits than its factorization.

91140460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42705 (or 42703 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 91140460 is about 9546.7512798857. The cubic root of 91140460 is about 450.0254471206.

Adding to 91140460 its reverse (6404119), we get a palindrome (97544579).

The spelling of 91140460 in words is "ninety-one million, one hundred forty thousand, four hundred sixty".