3219913 has 4 divisors (see below), whose sum is σ = 3240580. Its totient is φ = 3199248.

The previous prime is 3219901. The next prime is 3219917. The reversal of 3219913 is 3199123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3199123 = 601 ⋅5323.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 2424249 = 892^2 + 1557^2 .

It is a cyclic number.

It is not a de Polignac number, because 3219913 - 2⁹ = 3219401 is a prime.

It is a Duffinian number.

3219913 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3219917) 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, 10098 + ... + 10411.

It is an arithmetic number, because the mean of its divisors is an integer number (810145).

Almost surely, 2^3219913 is an apocalyptic number.

It is an amenable number.

3219913 is a deficient number, since it is larger than the sum of its proper divisors (20667).

3219913 is a wasteful number, since it uses less digits than its factorization.

3219913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20666.

The product of its digits is 1458, while the sum is 28.

The square root of 3219913 is about 1794.4116027266. The cubic root of 3219913 is about 147.6662952555. Note that the first 3 decimals are identical.

The spelling of 3219913 in words is "three million, two hundred nineteen thousand, nine hundred thirteen".