3521072449 has 2 divisors, whose sum is σ = 3521072450. Its totient is φ = 3521072448.

The previous prime is 3521072383. The next prime is 3521072479. The reversal of 3521072449 is 9442701253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2505503025 + 1015569424 = 50055^2 + 31868^2 .

It is a cyclic number.

It is not a de Polignac number, because 3521072449 - 2¹³ = 3521064257 is a prime.

It is a super-2 number, since 2×3521072449² = 24795902382213715202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3521072479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760536224 + 1760536225.

It is an arithmetic number, because the mean of its divisors is an integer number (1760536225).

Almost surely, 2^3521072449 is an apocalyptic number.

It is an amenable number.

3521072449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521072449 is an equidigital number, since it uses as much as digits as its factorization.

3521072449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 3521072449 is about 59338.6252705605. The cubic root of 3521072449 is about 1521.3354562149.

The spelling of 3521072449 in words is "three billion, five hundred twenty-one million, seventy-two thousand, four hundred forty-nine".