3531489421 has 2 divisors, whose sum is σ = 3531489422. Its totient is φ = 3531489420.

The previous prime is 3531489361. The next prime is 3531489443. The reversal of 3531489421 is 1249841353.

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., 3529666921 + 1822500 = 59411^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 3531489421 - 2⁷ = 3531489293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3531489721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765744710 + 1765744711.

It is an arithmetic number, because the mean of its divisors is an integer number (1765744711).

Almost surely, 2^3531489421 is an apocalyptic number.

It is an amenable number.

3531489421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531489421 is an equidigital number, since it uses as much as digits as its factorization.

3531489421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 3531489421 is about 59426.3360893131. The cubic root of 3531489421 is about 1522.8342520519.

The spelling of 3531489421 in words is "three billion, five hundred thirty-one million, four hundred eighty-nine thousand, four hundred twenty-one".