3521086409 has 2 divisors, whose sum is σ = 3521086410. Its totient is φ = 3521086408.

The previous prime is 3521086379. The next prime is 3521086411. The reversal of 3521086409 is 9046801253.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2082553225 + 1438533184 = 45635^2 + 37928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3521086409 is a prime.

Together with 3521086411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3521086489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760543204 + 1760543205.

It is an arithmetic number, because the mean of its divisors is an integer number (1760543205).

Almost surely, 2^3521086409 is an apocalyptic number.

It is an amenable number.

3521086409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521086409 is an equidigital number, since it uses as much as digits as its factorization.

3521086409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 3521086409 is about 59338.7429004019. The cubic root of 3521086409 is about 1521.3374667591.

The spelling of 3521086409 in words is "three billion, five hundred twenty-one million, eighty-six thousand, four hundred nine".