3408991 has 8 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 3226872.

The previous prime is 3408989. The next prime is 3409019. The reversal of 3408991 is 1998043.

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 3408991 - 2¹ = 3408989 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 (3408191) 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, 1650 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (449280).

Almost surely, 2^3408991 is an apocalyptic number.

3408991 is a deficient number, since it is larger than the sum of its proper divisors (185249).

3408991 is a wasteful number, since it uses less digits than its factorization.

3408991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3408991 is about 1846.3453089820. The cubic root of 3408991 is about 150.5018892122.

The spelling of 3408991 in words is "three million, four hundred eight thousand, nine hundred ninety-one".