3405890 has 16 divisors (see below), whose sum is σ = 6152760. Its totient is φ = 1357440.

The previous prime is 3405889. The next prime is 3405907. The reversal of 3405890 is 985043.

3405890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2301289 + 1104601 = 1517^2 + 1051^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806 + ... + 4614.

Almost surely, 2^3405890 is an apocalyptic number.

3405890 is a deficient number, since it is larger than the sum of its proper divisors (2746870).

3405890 is a wasteful number, since it uses less digits than its factorization.

3405890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3405890 is about 1845.5053508457. The cubic root of 3405890 is about 150.4562405199.

The spelling of 3405890 in words is "three million, four hundred five thousand, eight hundred ninety".