3049721 has 4 divisors (see below), whose sum is σ = 3091572. Its totient is φ = 3007872.

The previous prime is 3049699. The next prime is 3049723. The reversal of 3049721 is 1279403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1452025 + 1597696 = 1205^2 + 1264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3049721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3049723) 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, 20816 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (772893).

Almost surely, 2^3049721 is an apocalyptic number.

It is an amenable number.

3049721 is a deficient number, since it is larger than the sum of its proper divisors (41851).

3049721 is an equidigital number, since it uses as much as digits as its factorization.

3049721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41850.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 3049721 is about 1746.3450403629. The cubic root of 3049721 is about 145.0173740577.

The spelling of 3049721 in words is "three million, forty-nine thousand, seven hundred twenty-one".