3390421 has 8 divisors (see below), whose sum is σ = 3564704. Its totient is φ = 3220560.

The previous prime is 3390391. The next prime is 3390427. The reversal of 3390421 is 1240933.

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

It is a cyclic number.

It is not a de Polignac number, because 3390421 - 2⁵ = 3390389 is a prime.

It is a super-2 number, since 2×3390421² = 22989909114482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3390392 and 3390401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3390427) 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, 526 + ... + 2656.

It is an arithmetic number, because the mean of its divisors is an integer number (445588).

Almost surely, 2^3390421 is an apocalyptic number.

It is an amenable number.

3390421 is a deficient number, since it is larger than the sum of its proper divisors (174283).

3390421 is a wasteful number, since it uses less digits than its factorization.

3390421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3390421 is about 1841.3095883094. The cubic root of 3390421 is about 150.2281121823.

The spelling of 3390421 in words is "three million, three hundred ninety thousand, four hundred twenty-one".