4034721 has 4 divisors (see below), whose sum is σ = 5379632. Its totient is φ = 2689812.

The previous prime is 4034699. The next prime is 4034747. The reversal of 4034721 is 1274304.

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 not a de Polignac number, because 4034721 - 2⁵ = 4034689 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4034761) 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, 672451 + ... + 672456.

It is an arithmetic number, because the mean of its divisors is an integer number (1344908).

Almost surely, 2^4034721 is an apocalyptic number.

It is an amenable number.

4034721 is a deficient number, since it is larger than the sum of its proper divisors (1344911).

4034721 is a wasteful number, since it uses less digits than its factorization.

4034721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344910.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 4034721 is about 2008.6614946277. The cubic root of 4034721 is about 159.1980838848.

The spelling of 4034721 in words is "four million, thirty-four thousand, seven hundred twenty-one".