3621829 has 4 divisors (see below), whose sum is σ = 3628684. Its totient is φ = 3614976.

The previous prime is 3621803. The next prime is 3621851. The reversal of 3621829 is 9281263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9281263 = 191 ⋅48593.

It can be written as a sum of positive squares in 2 ways, for example, as 3572100 + 49729 = 1890^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 3621829 - 2⁵ = 3621797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3621829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621889) 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, 2562 + ... + 3715.

It is an arithmetic number, because the mean of its divisors is an integer number (907171).

Almost surely, 2^3621829 is an apocalyptic number.

It is an amenable number.

3621829 is a deficient number, since it is larger than the sum of its proper divisors (6855).

3621829 is an equidigital number, since it uses as much as digits as its factorization.

3621829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854.

The product of its digits is 5184, while the sum is 31.

The square root of 3621829 is about 1903.1103488763. The cubic root of 3621829 is about 153.5710359567.

The spelling of 3621829 in words is "three million, six hundred twenty-one thousand, eight hundred twenty-nine".