3914721 has 18 divisors (see below), whose sum is σ = 5849298. Its totient is φ = 2521440.

The previous prime is 3914699. The next prime is 3914723. The reversal of 3914721 is 1274193.

It can be written as a sum of positive squares in only one way, i.e., 2387025 + 1527696 = 1545^2 + 1236^2 .

It is not a de Polignac number, because 3914721 - 2⁵ = 3914689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3914723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37956 + ... + 38058.

It is an arithmetic number, because the mean of its divisors is an integer number (324961).

Almost surely, 2^3914721 is an apocalyptic number.

It is an amenable number.

3914721 is a deficient number, since it is larger than the sum of its proper divisors (1934577).

3914721 is a wasteful number, since it uses less digits than its factorization.

3914721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 147 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3914721 is about 1978.5653893668. The cubic root of 3914721 is about 157.6038921497.

The spelling of 3914721 in words is "three million, nine hundred fourteen thousand, seven hundred twenty-one".