2905491 has 8 divisors (see below), whose sum is σ = 3937744. Its totient is φ = 1905120.

The previous prime is 2905489. The next prime is 2905549. The reversal of 2905491 is 1945092.

It is a happy number.

2905491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2905491 - 2¹ = 2905489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2905411) 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 7 ways as a sum of consecutive naturals, for example, 7756 + ... + 8121.

It is an arithmetic number, because the mean of its divisors is an integer number (492218).

2^2905491 is an apocalyptic number.

2905491 is a deficient number, since it is larger than the sum of its proper divisors (1032253).

2905491 is a wasteful number, since it uses less digits than its factorization.

2905491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15941.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2905491 is about 1704.5500872664. The cubic root of 2905491 is about 142.6942625988.

The spelling of 2905491 in words is "two million, nine hundred five thousand, four hundred ninety-one".