3479521 has 4 divisors (see below), whose sum is σ = 3489732.
Its totient is φ = 3469312.
The previous prime is 3479513. The next prime is 3479537. The reversal of 3479521 is 1259743.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 2131600 = 1161^2 + 1460^2
It is a cyclic number.
It is not a de Polignac number, because 3479521 - 23 = 3479513 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (3479321) 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, 4576 + ... + 5281.
It is an arithmetic number, because the mean of its divisors is an integer number (872433).
Almost surely, 23479521 is an apocalyptic number.
It is an amenable number.
3479521 is a deficient number, since it is larger than the sum of its proper divisors (10211).
3479521 is an equidigital number, since it uses as much as digits as its factorization.
3479521 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10210.
The product of its digits is 7560, while the sum is 31.
The square root of 3479521 is about 1865.3474207235.
The cubic root of 3479521 is about 151.5327438874.
The spelling of 3479521 in words is "three million, four hundred seventy-nine thousand, five hundred twenty-one".