3405919 has 4 divisors (see below), whose sum is σ = 3715560. Its totient is φ = 3096280.

The previous prime is 3405907. The next prime is 3405929. The reversal of 3405919 is 9195043.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3405919 - 2⁷ = 3405791 is a prime.

It is a super-2 number, since 2×3405919² = 23200568469122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3405919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405929) 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, 154804 + ... + 154825.

It is an arithmetic number, because the mean of its divisors is an integer number (928890).

Almost surely, 2^3405919 is an apocalyptic number.

3405919 is a deficient number, since it is larger than the sum of its proper divisors (309641).

3405919 is a wasteful number, since it uses less digits than its factorization.

3405919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309640.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3405919 is about 1845.5132077555. The cubic root of 3405919 is about 150.4566675467.

The spelling of 3405919 in words is "three million, four hundred five thousand, nine hundred nineteen".