3521389 has 2 divisors, whose sum is σ = 3521390. Its totient is φ = 3521388.

The previous prime is 3521377. The next prime is 3521417. The reversal of 3521389 is 9831253.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2832489 + 688900 = 1683^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 3521389 - 2¹⁹ = 2997101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3521389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3521489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760694 + 1760695.

It is an arithmetic number, because the mean of its divisors is an integer number (1760695).

Almost surely, 2^3521389 is an apocalyptic number.

It is an amenable number.

3521389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521389 is an equidigital number, since it uses as much as digits as its factorization.

3521389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 3521389 is about 1876.5364371629. The cubic root of 3521389 is about 152.1381045150.

The spelling of 3521389 in words is "three million, five hundred twenty-one thousand, three hundred eighty-nine".