3749891 has 2 divisors, whose sum is σ = 3749892. Its totient is φ = 3749890.

The previous prime is 3749881. The next prime is 3749939. The reversal of 3749891 is 1989473.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3749891 - 2¹⁰ = 3748867 is a prime.

It is not a weakly prime, because it can be changed into another prime (3749861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1874945 + 1874946.

It is an arithmetic number, because the mean of its divisors is an integer number (1874946).

Almost surely, 2^3749891 is an apocalyptic number.

3749891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3749891 is an equidigital number, since it uses as much as digits as its factorization.

3749891 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 3749891 is about 1936.4635292202. The cubic root of 3749891 is about 155.3601200016.

The spelling of 3749891 in words is "three million, seven hundred forty-nine thousand, eight hundred ninety-one".