3534921 has 28 divisors (see below), whose sum is σ = 5722948. Its totient is φ = 2169504.

The previous prime is 3534919. The next prime is 3534967. The reversal of 3534921 is 1294353.

3534921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1166400 + 2368521 = 1080^2 + 1539^2 .

It is not a de Polignac number, because 3534921 - 2¹ = 3534919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3534121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9291 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (204391).

Almost surely, 2^3534921 is an apocalyptic number.

It is an amenable number.

3534921 is a deficient number, since it is larger than the sum of its proper divisors (2188027).

3534921 is an equidigital number, since it uses as much as digits as its factorization.

3534921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 389 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 3534921 is about 1880.1385587238. The cubic root of 3534921 is about 152.3327342804.

Adding to 3534921 its product of digits (3240), we get a square (3538161 = 1881²).

The spelling of 3534921 in words is "three million, five hundred thirty-four thousand, nine hundred twenty-one".