3539975221 has 2 divisors, whose sum is σ = 3539975222. Its totient is φ = 3539975220.

The previous prime is 3539975213. The next prime is 3539975249. The reversal of 3539975221 is 1225799353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1802002500 + 1737972721 = 42450^2 + 41689^2 .

It is an emirp because it is prime and its reverse (1225799353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3539975221 - 2³ = 3539975213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3539975251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1769987610 + 1769987611.

It is an arithmetic number, because the mean of its divisors is an integer number (1769987611).

Almost surely, 2^3539975221 is an apocalyptic number.

It is an amenable number.

3539975221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3539975221 is an equidigital number, since it uses as much as digits as its factorization.

3539975221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 46.

The square root of 3539975221 is about 59497.6908879664. The cubic root of 3539975221 is about 1524.0530135721.

The spelling of 3539975221 in words is "three billion, five hundred thirty-nine million, nine hundred seventy-five thousand, two hundred twenty-one".