3809906 has 8 divisors (see below), whose sum is σ = 5723244. Its totient is φ = 1902160.

The previous prime is 3809903. The next prime is 3809909. The reversal of 3809906 is 6099083.

It is an interprime number because it is at equal distance from previous prime (3809903) and next prime (3809909).

It can be written as a sum of positive squares in 2 ways, for example, as 3455881 + 354025 = 1859^2 + 595^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3809903) 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, 1556 + ... + 3168.

Almost surely, 2^3809906 is an apocalyptic number.

3809906 is a deficient number, since it is larger than the sum of its proper divisors (1913338).

3809906 is a wasteful number, since it uses less digits than its factorization.

3809906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3809906 is about 1951.8980506164. The cubic root of 3809906 is about 156.1845558464.

The spelling of 3809906 in words is "three million, eight hundred nine thousand, nine hundred six".