3493221 has 8 divisors (see below), whose sum is σ = 4714080. Its totient is φ = 2300592.

The previous prime is 3493219. The next prime is 3493223. The reversal of 3493221 is 1223943.

3493221 = 619² + 620² + ... + 627².

It is an interprime number because it is at equal distance from previous prime (3493219) and next prime (3493223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3493221 - 2¹ = 3493219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3493191 and 3493200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6766 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (589260).

Almost surely, 2^3493221 is an apocalyptic number.

It is an amenable number.

3493221 is a deficient number, since it is larger than the sum of its proper divisors (1220859).

3493221 is a wasteful number, since it uses less digits than its factorization.

3493221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115.

The product of its digits is 1296, while the sum is 24.

The square root of 3493221 is about 1869.0160512954. The cubic root of 3493221 is about 151.7313612554.

It can be divided in two parts, 349 and 3221, that added together give a triangular number (3570 = T₈₄).

The spelling of 3493221 in words is "three million, four hundred ninety-three thousand, two hundred twenty-one".