940091 has 4 divisors (see below), whose sum is σ = 942192. Its totient is φ = 937992.

The previous prime is 940087. The next prime is 940097. The reversal of 940091 is 190049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190049 = 23 ⋅8263.

It is a cyclic number.

It is not a de Polignac number, because 940091 - 2² = 940087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940097) by changing a digit.

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, 80 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (235548).

2⁹⁴⁰⁰⁹¹ is an apocalyptic number.

940091 is a deficient number, since it is larger than the sum of its proper divisors (2101).

940091 is a wasteful number, since it uses less digits than its factorization.

940091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 940091 is about 969.5829000142. The cubic root of 940091 is about 97.9617718453.

The spelling of 940091 in words is "nine hundred forty thousand, ninety-one".