3535404021 has 24 divisors (see below), whose sum is σ = 5279429376. Its totient is φ = 2277443520.

The previous prime is 3535404001. The next prime is 3535404071. The reversal of 3535404021 is 1204045353.

It is not a de Polignac number, because 3535404021 - 2⁶ = 3535403957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3535404001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181281 + ... + 199833.

It is an arithmetic number, because the mean of its divisors is an integer number (219976224).

Almost surely, 2^3535404021 is an apocalyptic number.

3535404021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3535404021 is a deficient number, since it is larger than the sum of its proper divisors (1744025355).

3535404021 is a wasteful number, since it uses less digits than its factorization.

3535404021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19273 (or 19270 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3535404021 is about 59459.2635423615. The cubic root of 3535404021 is about 1523.3967234763.

Adding to 3535404021 its reverse (1204045353), we get a palindrome (4739449374).

The spelling of 3535404021 in words is "three billion, five hundred thirty-five million, four hundred four thousand, twenty-one".