3209149 has 4 divisors (see below), whose sum is σ = 3261820. Its totient is φ = 3156480.

The previous prime is 3209147. The next prime is 3209161. The reversal of 3209149 is 9419023.

It is a happy number.

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 1545049 + 1664100 = 1243^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 3209149 - 2¹ = 3209147 is a prime.

It is a Duffinian number.

3209149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3209147) 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, 26244 + ... + 26365.

It is an arithmetic number, because the mean of its divisors is an integer number (815455).

Almost surely, 2^3209149 is an apocalyptic number.

It is an amenable number.

3209149 is a deficient number, since it is larger than the sum of its proper divisors (52671).

3209149 is an equidigital number, since it uses as much as digits as its factorization.

3209149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52670.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 3209149 is about 1791.4097800336. The cubic root of 3209149 is about 147.5015646679.

The spelling of 3209149 in words is "three million, two hundred nine thousand, one hundred forty-nine".