3814721 has 2 divisors, whose sum is σ = 3814722. Its totient is φ = 3814720.

The previous prime is 3814717. The next prime is 3814729. The reversal of 3814721 is 1274183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 801025 = 1736^2 + 895^2 .

It is an emirp because it is prime and its reverse (1274183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3814721 - 2² = 3814717 is a prime.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (3814729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1907360 + 1907361.

It is an arithmetic number, because the mean of its divisors is an integer number (1907361).

Almost surely, 2^3814721 is an apocalyptic number.

It is an amenable number.

3814721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3814721 is an equidigital number, since it uses as much as digits as its factorization.

3814721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 3814721 is about 1953.1310759905. The cubic root of 3814721 is about 156.2503240527.

The spelling of 3814721 in words is "three million, eight hundred fourteen thousand, seven hundred twenty-one".