3261209449 has 3 divisors (see below), whose sum is σ = 3261266557. Its totient is φ = 3261152342.

The previous prime is 3261209447. The next prime is 3261209461. The reversal of 3261209449 is 9449021623.

The square root of 3261209449 is 57107.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3261209449 - 2¹ = 3261209447 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261209447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 28554 + ... + 85660.

Almost surely, 2^3261209449 is an apocalyptic number.

3261209449 is the 57107-th square number.

3261209449 is the 28554-th centered octagonal number.

It is an amenable number.

3261209449 is a deficient number, since it is larger than the sum of its proper divisors (57108).

3261209449 is an frugal number, since it uses more digits than its factorization.

3261209449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114214 (or 57107 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The cubic root of 3261209449 is about 1482.9490517847.

The spelling of 3261209449 in words is "three billion, two hundred sixty-one million, two hundred nine thousand, four hundred forty-nine".