3834721 has 12 divisors (see below), whose sum is σ = 4379760. Its totient is φ = 3329480.

The previous prime is 3834703. The next prime is 3834797. The reversal of 3834721 is 1274383.

It is not a de Polignac number, because 3834721 - 2¹⁵ = 3801953 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3834721.

It is not an unprimeable number, because it can be changed into a prime (3834121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5490 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (364980).

Almost surely, 2^3834721 is an apocalyptic number.

It is an amenable number.

3834721 is a deficient number, since it is larger than the sum of its proper divisors (545039).

3834721 is a wasteful number, since it uses less digits than its factorization.

3834721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 693 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 3834721 is about 1958.2443667735. The cubic root of 3834721 is about 156.5229137582.

The spelling of 3834721 in words is "three million, eight hundred thirty-four thousand, seven hundred twenty-one".