91106940 has 24 divisors (see below), whose sum is σ = 255099600. Its totient is φ = 24295168.

The previous prime is 91106909. The next prime is 91107011. The reversal of 91106940 is 4960119.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 91106898 and 91106907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759165 + ... + 759284.

It is an arithmetic number, because the mean of its divisors is an integer number (10629150).

Almost surely, 2^91106940 is an apocalyptic number.

It is an amenable number.

91106940 is an abundant number, since it is smaller than the sum of its proper divisors (163992660).

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

91106940 is a wasteful number, since it uses less digits than its factorization.

91106940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518461 (or 1518459 counting only the distinct ones).

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

The square root of 91106940 is about 9544.9955474060. The cubic root of 91106940 is about 449.9702696408.

The spelling of 91106940 in words is "ninety-one million, one hundred six thousand, nine hundred forty".