3412821 has 8 divisors (see below), whose sum is σ = 4697344. Its totient is φ = 2201760.

The previous prime is 3412817. The next prime is 3412831. The reversal of 3412821 is 1282143.

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

It is not a de Polignac number, because 3412821 - 2² = 3412817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3412831) 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, 18256 + ... + 18441.

It is an arithmetic number, because the mean of its divisors is an integer number (587168).

Almost surely, 2^3412821 is an apocalyptic number.

3412821 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3412821 is a deficient number, since it is larger than the sum of its proper divisors (1284523).

3412821 is a wasteful number, since it uses less digits than its factorization.

3412821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36731.

The product of its digits is 384, while the sum is 21.

The square root of 3412821 is about 1847.3822019279. The cubic root of 3412821 is about 150.5582310546.

Adding to 3412821 its reverse (1282143), we get a palindrome (4694964).

The spelling of 3412821 in words is "three million, four hundred twelve thousand, eight hundred twenty-one".