3834781 has 4 divisors (see below), whose sum is σ = 3888864. Its totient is φ = 3780700.

The previous prime is 3834703. The next prime is 3834797. The reversal of 3834781 is 1874383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3834781 - 2⁷ = 3834653 is a prime.

It is a super-2 number, since 2×3834781² = 29411090635922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3831781) 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, 26935 + ... + 27076.

It is an arithmetic number, because the mean of its divisors is an integer number (972216).

Almost surely, 2^3834781 is an apocalyptic number.

It is an amenable number.

3834781 is a deficient number, since it is larger than the sum of its proper divisors (54083).

3834781 is an equidigital number, since it uses as much as digits as its factorization.

3834781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54082.

The product of its digits is 16128, while the sum is 34.

The square root of 3834781 is about 1958.2596865585. The cubic root of 3834781 is about 156.5237300997.

The spelling of 3834781 in words is "three million, eight hundred thirty-four thousand, seven hundred eighty-one".