3521947444 has 12 divisors (see below), whose sum is σ = 6294544704. Its totient is φ = 1723506104.

The previous prime is 3521947441. The next prime is 3521947459. The reversal of 3521947444 is 4447491253.

It is a super-2 number, since 2×3521947444² = 24808227596596266272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3521947444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521947441) 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 in 3 ways as a sum of consecutive naturals, for example, 9366694 + ... + 9367069.

It is an arithmetic number, because the mean of its divisors is an integer number (524545392).

Almost surely, 2^3521947444 is an apocalyptic number.

It is an amenable number.

3521947444 is a deficient number, since it is larger than the sum of its proper divisors (2772597260).

3521947444 is a wasteful number, since it uses less digits than its factorization.

3521947444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18733814 (or 18733812 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 3521947444 is about 59345.9977083544. The cubic root of 3521947444 is about 1521.4614642884.

The spelling of 3521947444 in words is "three billion, five hundred twenty-one million, nine hundred forty-seven thousand, four hundred forty-four".