91193412 has 12 divisors (see below), whose sum is σ = 212784656. Its totient is φ = 30397800.

The previous prime is 91193393. The next prime is 91193441. The reversal of 91193412 is 21439119.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 91193412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3799714 + ... + 3799737.

Almost surely, 2^91193412 is an apocalyptic number.

It is an amenable number.

91193412 is an abundant number, since it is smaller than the sum of its proper divisors (121591244).

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

91193412 is a wasteful number, since it uses less digits than its factorization.

91193412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599458 (or 7599456 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 91193412 is about 9549.5241766279. The cubic root of 91193412 is about 450.1125841762.

The spelling of 91193412 in words is "ninety-one million, one hundred ninety-three thousand, four hundred twelve".