2427891 has 4 divisors (see below), whose sum is σ = 3237192. Its totient is φ = 1618592.

The previous prime is 2427883. The next prime is 2427899. The reversal of 2427891 is 1987242.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2427883) and next prime (2427899).

It is a cyclic number.

It is not a de Polignac number, because 2427891 - 2³ = 2427883 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2427899) 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, 404646 + ... + 404651.

It is an arithmetic number, because the mean of its divisors is an integer number (809298).

2^2427891 is an apocalyptic number.

2427891 is a deficient number, since it is larger than the sum of its proper divisors (809301).

2427891 is an equidigital number, since it uses as much as digits as its factorization.

2427891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809300.

The product of its digits is 8064, while the sum is 33.

The square root of 2427891 is about 1558.1691179073. The cubic root of 2427891 is about 134.4032369721.

The spelling of 2427891 in words is "two million, four hundred twenty-seven thousand, eight hundred ninety-one".