3559921 has 4 divisors (see below), whose sum is σ = 3635712. Its totient is φ = 3484132.

The previous prime is 3559909. The next prime is 3559931. The reversal of 3559921 is 1299553.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 3559921 - 2⁷ = 3559793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3559931) 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, 37825 + ... + 37918.

It is an arithmetic number, because the mean of its divisors is an integer number (908928).

Almost surely, 2^3559921 is an apocalyptic number.

It is an amenable number.

3559921 is a deficient number, since it is larger than the sum of its proper divisors (75791).

3559921 is an equidigital number, since it uses as much as digits as its factorization.

3559921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75790.

The product of its digits is 12150, while the sum is 34.

The square root of 3559921 is about 1886.7752913370. The cubic root of 3559921 is about 152.6910049572.

The spelling of 3559921 in words is "three million, five hundred fifty-nine thousand, nine hundred twenty-one".