3524444621 has 4 divisors (see below), whose sum is σ = 3524575200. Its totient is φ = 3524314044.

The previous prime is 3524444597. The next prime is 3524444633. The reversal of 3524444621 is 1264444253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3524444621 - 2⁶ = 3524444557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3524444321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8111 + ... + 84348.

It is an arithmetic number, because the mean of its divisors is an integer number (881143800).

Almost surely, 2^3524444621 is an apocalyptic number.

It is an amenable number.

3524444621 is a deficient number, since it is larger than the sum of its proper divisors (130579).

3524444621 is an equidigital number, since it uses as much as digits as its factorization.

3524444621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130578.

The product of its digits is 92160, while the sum is 35.

The square root of 3524444621 is about 59367.0331160317. The cubic root of 3524444621 is about 1521.8209681360.

Adding to 3524444621 its reverse (1264444253), we get a palindrome (4788888874).

The spelling of 3524444621 in words is "three billion, five hundred twenty-four million, four hundred forty-four thousand, six hundred twenty-one".