3209121 has 24 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 1986336.

The previous prime is 3209117. The next prime is 3209131. The reversal of 3209121 is 1219023.

It is a happy number.

It is not a de Polignac number, because 3209121 - 2² = 3209117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3209094 and 3209103.

It is not an unprimeable number, because it can be changed into a prime (3209131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7450 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^3209121 is an apocalyptic number.

It is an amenable number.

3209121 is a deficient number, since it is larger than the sum of its proper divisors (1770399).

3209121 is a wasteful number, since it uses less digits than its factorization.

3209121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 3209121 is about 1791.4019649425. The cubic root of 3209121 is about 147.5011356802.

The spelling of 3209121 in words is "three million, two hundred nine thousand, one hundred twenty-one".