3479891 has 2 divisors, whose sum is σ = 3479892. Its totient is φ = 3479890.

The previous prime is 3479881. The next prime is 3479893. The reversal of 3479891 is 1989743.

It is a happy number.

3479891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3479891 is a prime.

Together with 3479893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3479893) 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 as a sum of consecutive naturals, namely, 1739945 + 1739946.

It is an arithmetic number, because the mean of its divisors is an integer number (1739946).

Almost surely, 2^3479891 is an apocalyptic number.

3479891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3479891 is an equidigital number, since it uses as much as digits as its factorization.

3479891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 3479891 is about 1865.4465953224. The cubic root of 3479891 is about 151.5381148496.

The spelling of 3479891 in words is "three million, four hundred seventy-nine thousand, eight hundred ninety-one".