3890906 has 4 divisors (see below), whose sum is σ = 5836362. Its totient is φ = 1945452.

The previous prime is 3890879. The next prime is 3890927. The reversal of 3890906 is 6090983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6090983 = 59 ⋅103237.

It can be written as a sum of positive squares in only one way, i.e., 2920681 + 970225 = 1709^2 + 985^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972725 + ... + 972728.

Almost surely, 2^3890906 is an apocalyptic number.

3890906 is a deficient number, since it is larger than the sum of its proper divisors (1945456).

3890906 is a wasteful number, since it uses less digits than its factorization.

3890906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945455.

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

The square root of 3890906 is about 1972.5379590771. The cubic root of 3890906 is about 157.2836502052.

The spelling of 3890906 in words is "three million, eight hundred ninety thousand, nine hundred six".