2940191 has 4 divisors (see below), whose sum is σ = 2947272. Its totient is φ = 2933112.

The previous prime is 2940187. The next prime is 2940229. The reversal of 2940191 is 1910492.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2940191 - 2² = 2940187 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2940191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2940101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876 + ... + 3761.

It is an arithmetic number, because the mean of its divisors is an integer number (736818).

2^2940191 is an apocalyptic number.

2940191 is a deficient number, since it is larger than the sum of its proper divisors (7081).

2940191 is an equidigital number, since it uses as much as digits as its factorization.

2940191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2940191 is about 1714.6985157747. The cubic root of 2940191 is about 143.2600773429.

It can be divided in two parts, 29401 and 91, that added together give a palindrome (29492).

The spelling of 2940191 in words is "two million, nine hundred forty thousand, one hundred ninety-one".