3439621 has 2 divisors, whose sum is σ = 3439622. Its totient is φ = 3439620.

The previous prime is 3439609. The next prime is 3439633. The reversal of 3439621 is 1269343.

It is a balanced prime because it is at equal distance from previous prime (3439609) and next prime (3439633).

It can be written as a sum of positive squares in only one way, i.e., 2070721 + 1368900 = 1439^2 + 1170^2 .

It is an emirp because it is prime and its reverse (1269343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3439621 - 2¹⁵ = 3406853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3439621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3439651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719810 + 1719811.

It is an arithmetic number, because the mean of its divisors is an integer number (1719811).

Almost surely, 2^3439621 is an apocalyptic number.

It is an amenable number.

3439621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3439621 is an equidigital number, since it uses as much as digits as its factorization.

3439621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 3439621 is about 1854.6215247322. The cubic root of 3439621 is about 150.9513022212.

The spelling of 3439621 in words is "three million, four hundred thirty-nine thousand, six hundred twenty-one".